Analysis
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max time kernel
94s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
23/12/2022, 08:16
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
2.0MB
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MD5
f01ad2f4fee2f31ba6acc30e683ec149
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SHA1
e0a2809ac3b05b6bdbf44ab425390afaafd926b9
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SHA256
c643e78c8a4d5b00767cc5ccf696aa61d7ee4ceb212695acc4955da6205e1428
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SHA512
c6cabbaf1c31d8f8307de42d264797071d3ee6e2fd843cb4173ddbcc8f5f39f94adb343e8b7056bc4985f74cf38c71c427eb27bce534e31d39415ee59c634f29
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SSDEEP
49152:v0v9y/AvZnICNii6lzMBcO3folVqo6jTTMDqpLTaGSm/WEWP7p3F:vY9yoChJQP3folVqoYToDULO381GdF
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1056 is-0IQD0.tmp 4720 SplitFiles118.exe 4640 1Lmr4Km.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation SplitFiles118.exe -
Loads dropped DLL 1 IoCs
pid Process 1056 is-0IQD0.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 17 IoCs
description ioc Process File created C:\Program Files (x86)\Split Files\is-RV1UU.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-12T2L.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-KG8A9.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-DRONU.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-GS0EL.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-QOU4G.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-I0E6S.tmp is-0IQD0.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-FDLT7.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\is-RKH6F.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-7LGT0.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\is-KAH8Q.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\is-AN7RI.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\is-J4V2P.tmp is-0IQD0.tmp File created C:\Program Files (x86)\Split Files\language\is-3CRKR.tmp is-0IQD0.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles118.exe is-0IQD0.tmp -
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 2436 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4720 SplitFiles118.exe 4720 SplitFiles118.exe 4720 SplitFiles118.exe 4720 SplitFiles118.exe 4720 SplitFiles118.exe 4720 SplitFiles118.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2436 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4912 wrote to memory of 1056 4912 file.exe 83 PID 4912 wrote to memory of 1056 4912 file.exe 83 PID 4912 wrote to memory of 1056 4912 file.exe 83 PID 1056 wrote to memory of 4720 1056 is-0IQD0.tmp 84 PID 1056 wrote to memory of 4720 1056 is-0IQD0.tmp 84 PID 1056 wrote to memory of 4720 1056 is-0IQD0.tmp 84 PID 4720 wrote to memory of 4640 4720 SplitFiles118.exe 85 PID 4720 wrote to memory of 4640 4720 SplitFiles118.exe 85 PID 4720 wrote to memory of 4640 4720 SplitFiles118.exe 85 PID 4720 wrote to memory of 2248 4720 SplitFiles118.exe 93 PID 4720 wrote to memory of 2248 4720 SplitFiles118.exe 93 PID 4720 wrote to memory of 2248 4720 SplitFiles118.exe 93 PID 2248 wrote to memory of 2436 2248 cmd.exe 95 PID 2248 wrote to memory of 2436 2248 cmd.exe 95 PID 2248 wrote to memory of 2436 2248 cmd.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4912 -
C:\Users\Admin\AppData\Local\Temp\is-LDD3S.tmp\is-0IQD0.tmp"C:\Users\Admin\AppData\Local\Temp\is-LDD3S.tmp\is-0IQD0.tmp" /SL4 $80060 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1792742 1331202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1056 -
C:\Program Files (x86)\Split Files\SplitFiles118.exe"C:\Program Files (x86)\Split Files\SplitFiles118.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4720 -
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\1Lmr4Km.exe4⤵
- Executes dropped EXE
PID:4640
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles118.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles118.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:2248 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles118.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2436
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.3MB
MD538274f73a1c862fa536415bd73982e2e
SHA17fa88b37a6c3ee500c298960a93d8fd97f48bf25
SHA256d5c75effb17ea32b67fdc6b181d69ca28cf3e89bfeff39ab1f946c6134fb2155
SHA5122a40352b9078304271c8fdcbb197602f5d1c0d0ccc41fe0a03743158c72f9ac4c0fdabda3fca24e12f2e5f32f9c3551827549965efecd43c3ec32204a94d3c08
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Filesize
3.3MB
MD538274f73a1c862fa536415bd73982e2e
SHA17fa88b37a6c3ee500c298960a93d8fd97f48bf25
SHA256d5c75effb17ea32b67fdc6b181d69ca28cf3e89bfeff39ab1f946c6134fb2155
SHA5122a40352b9078304271c8fdcbb197602f5d1c0d0ccc41fe0a03743158c72f9ac4c0fdabda3fca24e12f2e5f32f9c3551827549965efecd43c3ec32204a94d3c08
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c