Analysis
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max time kernel
124s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
17/03/2025, 16:00
General
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Target
GrimClient3.5.exe
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Size
42KB
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MD5
f8aad0ba44c22a03a92c8a992de6f188
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SHA1
a8f8ac95ee5a49a473104581ba073118c0f545f7
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SHA256
ccf8f646ddf20ba1e354c3ad35880e441d78ab292a2fd8b2edd49f3abfbe0422
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SHA512
7fa3cb08ee2b176ddaeb3bf20bed0a46a583c87a01922851975e1d191999f47a9dfe4421c8eb50c15c5c8b97d80c99d3da59fc97eb7756b84a216d5b61f51820
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SSDEEP
384:7AfIRHS2LtjR39hxiTRWgxfYTx2s/XZxIh/9oJEFq5nm0GTAsQ4KQsLd/SfgUfAQ:Z7DxURWf4uZvLlGTjQ4KZKfgm3Eht+
Malware Config
Extracted
mercurialgrabber
https://discord.com/api/webhooks/1351222685405024296/pvzGqfhW1MeB2uoiUPX5kRWkfddZIOBcx4zo8SpxDvoTeVdF_InCZ3P760g3QMnaEEnA
Signatures
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Mercurial Grabber Stealer
Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.
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Mercurialgrabber family
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Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of SetWindowsHookEx 3 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\GrimClient3.5.exe"C:\Users\Admin\AppData\Local\Temp\GrimClient3.5.exe"1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2448 -s 14002⤵
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C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD505957bfeac45c8af8d7df106fe96ad47
SHA1690fb12b52971b86f03874ca88c235e7be39fb28
SHA256697ff00f3087896c6d374ee1b251f9c21e2dba6c9b3509f588a77cdceee55bc4
SHA5127620799fdd2fac9b08a7e735eae8122cd43a4dab526941ccdbb50596b2a2d87ba2f40318e643ad59df637ed644f9919f535adba568af307615c206d9bec7199f
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Filesize
4KB
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Filesize
64KB
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Filesize
9.9MB
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Filesize
4KB
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Filesize
9.9MB