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Analysis
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max time kernel
62s -
max time network
65s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02/01/2023, 21:40
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
1.8MB
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MD5
27046698de7a3d6e5f5857108b4093a7
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SHA1
d3bb9760a390101f4ca5d445e357b357deb84b64
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SHA256
77c2f269bd667b5af744fb15bd8a4e303367e787e1418757cc92f44611049a7c
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SHA512
f2b91623b692cb38b8f6769c3ef7044ad67658e37f91c076967f5442d80c3aa4367b7beef7d8cec16f1f2a92c0b1a33b3a69625f4a477a007eec3fb6e35df9ca
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SSDEEP
49152:Ii/tvjCyUs6Hx5U/hRkqnDcdISuv21eo9IbKuKmRvLpFR+DI21MSBk3u:Ii/tvj8se1Cwugb9KKuKmRDpb+UHSBke
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1480 is-M3TRL.tmp 2028 SplitFiles128.exe 1624 Z7B22Jn.exe -
Loads dropped DLL 10 IoCs
pid Process 864 file.exe 1480 is-M3TRL.tmp 1480 is-M3TRL.tmp 1480 is-M3TRL.tmp 1480 is-M3TRL.tmp 2028 SplitFiles128.exe 2028 SplitFiles128.exe 2028 SplitFiles128.exe 1624 Z7B22Jn.exe 1624 Z7B22Jn.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-6FKA2.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-NP2NS.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-9IT52.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-8LCAM.tmp is-M3TRL.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles128.exe is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-271S2.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-KIMT0.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\is-CIAHE.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\is-80V7C.tmp is-M3TRL.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\is-CP5D1.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-KG87G.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-9GAC6.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-BUML3.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\language\is-KKAGC.tmp is-M3TRL.tmp File created C:\Program Files (x86)\Split Files\is-SK11S.tmp is-M3TRL.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 1072 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2028 SplitFiles128.exe 2028 SplitFiles128.exe 2028 SplitFiles128.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1072 taskkill.exe Token: SeRestorePrivilege 1480 is-M3TRL.tmp Token: SeBackupPrivilege 1480 is-M3TRL.tmp -
Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 864 wrote to memory of 1480 864 file.exe 27 PID 864 wrote to memory of 1480 864 file.exe 27 PID 864 wrote to memory of 1480 864 file.exe 27 PID 864 wrote to memory of 1480 864 file.exe 27 PID 864 wrote to memory of 1480 864 file.exe 27 PID 864 wrote to memory of 1480 864 file.exe 27 PID 864 wrote to memory of 1480 864 file.exe 27 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 1480 wrote to memory of 2028 1480 is-M3TRL.tmp 28 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1624 2028 SplitFiles128.exe 29 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 2028 wrote to memory of 1152 2028 SplitFiles128.exe 32 PID 1152 wrote to memory of 1072 1152 cmd.exe 34 PID 1152 wrote to memory of 1072 1152 cmd.exe 34 PID 1152 wrote to memory of 1072 1152 cmd.exe 34 PID 1152 wrote to memory of 1072 1152 cmd.exe 34 PID 1152 wrote to memory of 1072 1152 cmd.exe 34 PID 1152 wrote to memory of 1072 1152 cmd.exe 34 PID 1152 wrote to memory of 1072 1152 cmd.exe 34
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:864 -
C:\Users\Admin\AppData\Local\Temp\is-8OB55.tmp\is-M3TRL.tmp"C:\Users\Admin\AppData\Local\Temp\is-8OB55.tmp\is-M3TRL.tmp" /SL4 $60120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1597539 931842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1480 -
C:\Program Files (x86)\Split Files\SplitFiles128.exe"C:\Program Files (x86)\Split Files\SplitFiles128.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2028 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Z7B22Jn.exe
- Executes dropped EXE
- Loads dropped DLL
PID:1624
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles128.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles128.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles128.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1072
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.3MB
MD5a68811083e82c7d58cccb9c431e475a6
SHA1a48df7a8e2b7e6f3060cd5ba604f2214971ff216
SHA256c631d87e6fa9bae8bad7a8375e7139cfa066d2c302dbcd6de3dbade263ea8334
SHA5125adf29e6e89df27e7e5b8743744175165ca36223050063967d711746e923206e620d08eb17637255661d7227a541420cae9620109c2c98b5f80d3b9198ec18f9
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Filesize
3.3MB
MD5a68811083e82c7d58cccb9c431e475a6
SHA1a48df7a8e2b7e6f3060cd5ba604f2214971ff216
SHA256c631d87e6fa9bae8bad7a8375e7139cfa066d2c302dbcd6de3dbade263ea8334
SHA5125adf29e6e89df27e7e5b8743744175165ca36223050063967d711746e923206e620d08eb17637255661d7227a541420cae9620109c2c98b5f80d3b9198ec18f9
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Filesize
685KB
MD57f46188bafe719b5ba8e32c2e0037f21
SHA16dc19d768f6b24766cfcdf49f630b517174c780e
SHA2563c65b17529d5a22bbcb9f726f567f3a0506f6536bc5048789fd2f11c420ffd5e
SHA5125c14cf51850c1e02765e86f7a166e7554425c3399e979ff75397a1c430e1c5099545eddd51e65b06790fb3cc9cbb70b70749438ec3277deba5a0eb4c3beb2bc3
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Filesize
685KB
MD57f46188bafe719b5ba8e32c2e0037f21
SHA16dc19d768f6b24766cfcdf49f630b517174c780e
SHA2563c65b17529d5a22bbcb9f726f567f3a0506f6536bc5048789fd2f11c420ffd5e
SHA5125c14cf51850c1e02765e86f7a166e7554425c3399e979ff75397a1c430e1c5099545eddd51e65b06790fb3cc9cbb70b70749438ec3277deba5a0eb4c3beb2bc3
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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
MD5a68811083e82c7d58cccb9c431e475a6
SHA1a48df7a8e2b7e6f3060cd5ba604f2214971ff216
SHA256c631d87e6fa9bae8bad7a8375e7139cfa066d2c302dbcd6de3dbade263ea8334
SHA5125adf29e6e89df27e7e5b8743744175165ca36223050063967d711746e923206e620d08eb17637255661d7227a541420cae9620109c2c98b5f80d3b9198ec18f9
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Filesize
3.3MB
MD5a68811083e82c7d58cccb9c431e475a6
SHA1a48df7a8e2b7e6f3060cd5ba604f2214971ff216
SHA256c631d87e6fa9bae8bad7a8375e7139cfa066d2c302dbcd6de3dbade263ea8334
SHA5125adf29e6e89df27e7e5b8743744175165ca36223050063967d711746e923206e620d08eb17637255661d7227a541420cae9620109c2c98b5f80d3b9198ec18f9
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Filesize
3.3MB
MD5a68811083e82c7d58cccb9c431e475a6
SHA1a48df7a8e2b7e6f3060cd5ba604f2214971ff216
SHA256c631d87e6fa9bae8bad7a8375e7139cfa066d2c302dbcd6de3dbade263ea8334
SHA5125adf29e6e89df27e7e5b8743744175165ca36223050063967d711746e923206e620d08eb17637255661d7227a541420cae9620109c2c98b5f80d3b9198ec18f9
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Filesize
685KB
MD57f46188bafe719b5ba8e32c2e0037f21
SHA16dc19d768f6b24766cfcdf49f630b517174c780e
SHA2563c65b17529d5a22bbcb9f726f567f3a0506f6536bc5048789fd2f11c420ffd5e
SHA5125c14cf51850c1e02765e86f7a166e7554425c3399e979ff75397a1c430e1c5099545eddd51e65b06790fb3cc9cbb70b70749438ec3277deba5a0eb4c3beb2bc3
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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