Analysis
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max time kernel
137s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
11-03-2023 08:18
Static task
static1
Behavioral task
behavioral1
Sample
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe
Resource
win7-20230220-en
General
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Target
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe
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Size
760KB
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MD5
9f700a5aa12ce068b6d7a78ab785b17a
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SHA1
25742162d94f4479d557fb659e3a3280d91a1580
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SHA256
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8
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SHA512
d6a4878db5e914dfbe763ae6e1ec9007e4c710bae89a78a714adc0efd05f772668ee4bee1ad1fcd4db61613f2438d0dfd529bf91b03af50c05e98f487f880938
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SSDEEP
12288:kIAAhJZaF75GF2ibA6Sm/HO5J9MdpNNR36UH+4ahldt8VU2EfPrHLEgkMnJ6PM6:LAxb8AJovPR36UH+4C6u2E3Tzwr
Malware Config
Extracted
limerat
1LLUV51XQKqq94X965Cc6uGPXeZEGSqCdV
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aes_key
NYANCAT
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antivm
false
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c2_url
https://pastebin.com/raw/4pByu6u5
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delay
3
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download_payload
false
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install
false
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install_name
Wservices.exe
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main_folder
AppData
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pin_spread
false
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sub_folder
\
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usb_spread
true
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exedescription pid Process procid_target PID 1500 set thread context of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exedescription pid Process Token: SeDebugPrivilege 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe Token: SeDebugPrivilege 368 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe Token: SeDebugPrivilege 368 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exedescription pid Process procid_target PID 1500 wrote to memory of 4752 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 93 PID 1500 wrote to memory of 4752 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 93 PID 1500 wrote to memory of 4752 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 93 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95 PID 1500 wrote to memory of 368 1500 641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe"C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KzSuNlCQoYKnH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3558.tmp"2⤵
- Creates scheduled task(s)
PID:4752
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C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe"C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
PID:368
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe.log
Filesize1KB
MD517573558c4e714f606f997e5157afaac
SHA113e16e9415ceef429aaf124139671ebeca09ed23
SHA256c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553
SHA512f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc
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Filesize
1KB
MD59544f541e7a2bbcab1d37542e4e15a50
SHA19ff39f4ef368e6d991febe10debf234dd7a84d67
SHA256f09bcf14e8db5d5c28c219bfe98903110f196e53fc6d821d3f9b10f5be716060
SHA512951e9f7e6b62793480d624002b24eb1c8069c6115b9637ddaf42bec08b4068d64ba0ea1ff5add57d609c0898b27d4f7ba9f57f76ae11cf8980b8f9aeb9d37576