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Home/ATT&CK/Software/S1013
MITRE ATT&CK Malware

ZxxZ (S1013)

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[ZxxZ](https://attack.mitre.org/software/S1013) is a trojan written in Visual C++ that has been used by [BITTER](https://attack.mitre.org/groups/G1002) since at least August 2021, including against Bangladeshi government personnel.(Citation: Cisco Talos Bitter Bangladesh May 2022)

Platforms: Windows

▪Techniques implemented (14)

T1106Native APIT1105Ingress Tool TransferT1057Process DiscoveryT1082System Information DiscoveryT1518.001Security Software DiscoveryT1036.004Masquerade Task or ServiceT1012Query RegistryT1027.013Encrypted/Encoded FileT1053.005Scheduled TaskT1204.002Malicious FileT1566.001Spearphishing AttachmentT1033System Owner/User DiscoveryT1005Data from Local SystemT1140Deobfuscate/Decode Files or Information

▪Used by groups (1)

G1002BITTER
S1013on MITRE ATT&CK →

MITRE ATT&CK® is a registered trademark of The MITRE Corporation. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.