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Analysis
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max time kernel
56s -
max time network
60s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
10/10/2022, 10:06
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
406KB
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MD5
55c0f803a6f225c8d99cf5649bcde8a2
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SHA1
e4235a1a602a4e1bc2ff3b8fe6d1eece837c6d46
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SHA256
8ec72faef5f0fcd1c8b3c5371eb3f9bd8beeefa034f7fc4750168df49e35a69f
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SHA512
0f51225afbcdf0322442dadcd916e68ad0a1673ae1b64df0354c1e3c938aacb54b2e4c69ed8e01ca57d27b7466f1d1bfa90bebe58fdb629250addc63c749768a
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SSDEEP
6144:pn0aK52xZ86pYYyaihvjhbetJNk8Dy2i16kK0gLQmPC6nCrwVfquS:pnw52k6pYGiLetJS2iIkTNYVnCd
Malware Config
Extracted
nymaim
208.67.104.97
85.31.46.167
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1644 9xnHOa5ZGTcRp.exe -
Deletes itself 1 IoCs
pid Process 1476 cmd.exe -
Loads dropped DLL 1 IoCs
pid Process 1348 file.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
pid Process 1332 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1348 file.exe 1348 file.exe 1348 file.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1332 taskkill.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1348 wrote to memory of 1644 1348 file.exe 29 PID 1348 wrote to memory of 1644 1348 file.exe 29 PID 1348 wrote to memory of 1644 1348 file.exe 29 PID 1348 wrote to memory of 1644 1348 file.exe 29 PID 1348 wrote to memory of 1476 1348 file.exe 30 PID 1348 wrote to memory of 1476 1348 file.exe 30 PID 1348 wrote to memory of 1476 1348 file.exe 30 PID 1348 wrote to memory of 1476 1348 file.exe 30 PID 1476 wrote to memory of 1332 1476 cmd.exe 32 PID 1476 wrote to memory of 1332 1476 cmd.exe 32 PID 1476 wrote to memory of 1332 1476 cmd.exe 32 PID 1476 wrote to memory of 1332 1476 cmd.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1348 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\9xnHOa5ZGTcRp.exe
- Executes dropped EXE
PID:1644
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "file.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1332
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c