Analysis
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max time kernel
60s -
max time network
62s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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 1912 is-F4UFB.tmp 1368 SplitFiles118.exe 1448 WC2rtjHkow.exe -
Loads dropped DLL 10 IoCs
pid Process 1652 file.exe 1912 is-F4UFB.tmp 1912 is-F4UFB.tmp 1912 is-F4UFB.tmp 1912 is-F4UFB.tmp 1368 SplitFiles118.exe 1368 SplitFiles118.exe 1368 SplitFiles118.exe 1448 WC2rtjHkow.exe 1448 WC2rtjHkow.exe -
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-FDNUO.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-6NGF6.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\is-D1A24.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\is-F3B7P.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-FN7HN.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\is-3GTJK.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-48OOQ.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-HOF01.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-L8R3D.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-1049E.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-KCPHR.tmp is-F4UFB.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-PR75H.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\language\is-5EGJD.tmp is-F4UFB.tmp File created C:\Program Files (x86)\Split Files\is-CVL21.tmp is-F4UFB.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles118.exe is-F4UFB.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 1748 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1368 SplitFiles118.exe 1368 SplitFiles118.exe 1368 SplitFiles118.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeRestorePrivilege 1912 is-F4UFB.tmp Token: SeBackupPrivilege 1912 is-F4UFB.tmp Token: SeDebugPrivilege 1748 taskkill.exe -
Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1652 wrote to memory of 1912 1652 file.exe 28 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1912 wrote to memory of 1368 1912 is-F4UFB.tmp 29 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1448 1368 SplitFiles118.exe 30 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1368 wrote to memory of 1320 1368 SplitFiles118.exe 33 PID 1320 wrote to memory of 1748 1320 cmd.exe 35 PID 1320 wrote to memory of 1748 1320 cmd.exe 35 PID 1320 wrote to memory of 1748 1320 cmd.exe 35 PID 1320 wrote to memory of 1748 1320 cmd.exe 35 PID 1320 wrote to memory of 1748 1320 cmd.exe 35 PID 1320 wrote to memory of 1748 1320 cmd.exe 35 PID 1320 wrote to memory of 1748 1320 cmd.exe 35
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 use of WriteProcessMemory
PID:1652 -
C:\Users\Admin\AppData\Local\Temp\is-ABHH6.tmp\is-F4UFB.tmp"C:\Users\Admin\AppData\Local\Temp\is-ABHH6.tmp\is-F4UFB.tmp" /SL4 $90120 "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 AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1912 -
C:\Program Files (x86)\Split Files\SplitFiles118.exe"C:\Program Files (x86)\Split Files\SplitFiles118.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1368 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\WC2rtjHkow.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1448
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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:1320 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles118.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1748
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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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
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
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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
3.3MB
MD538274f73a1c862fa536415bd73982e2e
SHA17fa88b37a6c3ee500c298960a93d8fd97f48bf25
SHA256d5c75effb17ea32b67fdc6b181d69ca28cf3e89bfeff39ab1f946c6134fb2155
SHA5122a40352b9078304271c8fdcbb197602f5d1c0d0ccc41fe0a03743158c72f9ac4c0fdabda3fca24e12f2e5f32f9c3551827549965efecd43c3ec32204a94d3c08
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c