Analysis
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max time kernel
146s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
23-03-2024 06:41
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20240221-en
General
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Target
tmp.exe
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Size
413KB
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MD5
d467222c3bd563cb72fa49302f80b079
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SHA1
9335e2a36abb8309d8a2075faf78d66b968b2a91
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SHA256
fedb08b3ec7034a15e9dee7ed4dec1a854fb78e74285e1ee05c90f9e9e4f8b3e
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SHA512
484b6c427e28193ddb73dd7062e2bfbd132ddc72ce4811bfe08784669de30e4b92bc27140373f62a4ce651401000a3c505188620c43da410bf6b0799a0791fa7
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SSDEEP
6144:0UorLrzMYSnDyTtDOYtf3J7+YZIPcrPJruPWeX2/e1Cw+GOpumhauZef6P5rwmx:0vcYZD17DMPWev1Cb3umhauZef6a
Malware Config
Extracted
amadey
4.17
http://193.233.132.167
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install_dir
4d0ab15804
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install_file
chrosha.exe
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strings_key
1a9519d7b465e1f4880fa09a6162d768
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url_paths
/enigma/index.php
Signatures
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Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exerundll32.exeflow pid process 48 1224 rundll32.exe 63 3488 rundll32.exe -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
chrosha.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation chrosha.exe -
Executes dropped EXE 1 IoCs
Processes:
chrosha.exepid process 1864 chrosha.exe -
Loads dropped DLL 3 IoCs
Processes:
rundll32.exerundll32.exerundll32.exepid process 4496 rundll32.exe 1224 rundll32.exe 3488 rundll32.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Windows directory 1 IoCs
Processes:
tmp.exedescription ioc process File created C:\Windows\Tasks\chrosha.job tmp.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 13 IoCs
Processes:
rundll32.exepowershell.exepid process 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 1224 rundll32.exe 4384 powershell.exe 4384 powershell.exe 4384 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 4384 powershell.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
tmp.exepid process 4292 tmp.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
chrosha.exerundll32.exerundll32.exedescription pid process target process PID 1864 wrote to memory of 4496 1864 chrosha.exe rundll32.exe PID 1864 wrote to memory of 4496 1864 chrosha.exe rundll32.exe PID 1864 wrote to memory of 4496 1864 chrosha.exe rundll32.exe PID 4496 wrote to memory of 1224 4496 rundll32.exe rundll32.exe PID 4496 wrote to memory of 1224 4496 rundll32.exe rundll32.exe PID 1224 wrote to memory of 3168 1224 rundll32.exe netsh.exe PID 1224 wrote to memory of 3168 1224 rundll32.exe netsh.exe PID 1224 wrote to memory of 4384 1224 rundll32.exe powershell.exe PID 1224 wrote to memory of 4384 1224 rundll32.exe powershell.exe PID 1864 wrote to memory of 3488 1864 chrosha.exe rundll32.exe PID 1864 wrote to memory of 3488 1864 chrosha.exe rundll32.exe PID 1864 wrote to memory of 3488 1864 chrosha.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Drops file in Windows directory
- Suspicious use of FindShellTrayWindow
PID:4292
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C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exeC:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4496 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1224 -
C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:3168
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\808065738166_Desktop.zip' -CompressionLevel Optimal4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4384
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll, Main2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:3488
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:81⤵PID:1080
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
413KB
MD5d467222c3bd563cb72fa49302f80b079
SHA19335e2a36abb8309d8a2075faf78d66b968b2a91
SHA256fedb08b3ec7034a15e9dee7ed4dec1a854fb78e74285e1ee05c90f9e9e4f8b3e
SHA512484b6c427e28193ddb73dd7062e2bfbd132ddc72ce4811bfe08784669de30e4b92bc27140373f62a4ce651401000a3c505188620c43da410bf6b0799a0791fa7
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
109KB
MD5154c3f1334dd435f562672f2664fea6b
SHA151dd25e2ba98b8546de163b8f26e2972a90c2c79
SHA2565f431129f97f3d56929f1e5584819e091bd6c854d7e18503074737fc6d79e33f
SHA5121bca69bbcdb7ecd418769e9d4befc458f9f8e3cee81feb7316bb61e189e2904f4431e4cc7d291e179a5dec441b959d428d8e433f579036f763bbad6460222841
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Filesize
1.2MB
MD5f35b671fda2603ec30ace10946f11a90
SHA1059ad6b06559d4db581b1879e709f32f80850872
SHA25683e3df5bec15d5333935bea8b719a6d677e2fb3dc1cf9e18e7b82fd0438285c7
SHA512b5fa27d08c64727cef7fdda5e68054a4359cd697df50d70d1d90da583195959a139066a6214531bbc5f20cd4f9bc1ca3e4244396547381291a6a1d2df9cf8705