Analysis
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max time kernel
63s -
max time network
64s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
18/11/2022, 17:01
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
b517646f6b38547531ed29bcc5bb1217
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SHA1
c0402829596b3b2d2888a71aa7327aa59275e045
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SHA256
7bcfd3e7fae699fe4c106aaeaef12a5fc9a06cbe78278f5fa3d5bac99ffb7e0a
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SHA512
959cdae7ae2c198b8f57130e79c589cc318dbc16fd0043200d0da826d1eda83ef304655d8f86eed0c59f8a0f29e30d51d3d8f69acf215f2d95681c2f4e87ed83
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SSDEEP
49152:q2mGuhOdaZcEevXYwdV3eDsUswxCQxvlPXm3vJA0LqyHfRx7Pq2:rmGucEGXYw8qwUQxNPXUA0bPD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1732 is-GBUMV.tmp 1756 grsearcher83.exe 2000 gUCrPzzuGynp.exe -
Loads dropped DLL 6 IoCs
pid Process 1208 file.exe 1732 is-GBUMV.tmp 1732 is-GBUMV.tmp 1732 is-GBUMV.tmp 1732 is-GBUMV.tmp 1756 grsearcher83.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 12 IoCs
description ioc Process File created C:\Program Files (x86)\grSearcher\is-F9LPM.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-9Q3D5.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-UCNSC.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-GVELI.tmp is-GBUMV.tmp File opened for modification C:\Program Files (x86)\grSearcher\unins000.dat is-GBUMV.tmp File opened for modification C:\Program Files (x86)\grSearcher\grsearcher83.exe is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\unins000.dat is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-JNT9M.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-5AK0J.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-DRPQO.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-IINOT.tmp is-GBUMV.tmp File created C:\Program Files (x86)\grSearcher\is-TVK50.tmp is-GBUMV.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 784 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1756 grsearcher83.exe 1756 grsearcher83.exe 1756 grsearcher83.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 784 taskkill.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1208 wrote to memory of 1732 1208 file.exe 27 PID 1732 wrote to memory of 1756 1732 is-GBUMV.tmp 28 PID 1732 wrote to memory of 1756 1732 is-GBUMV.tmp 28 PID 1732 wrote to memory of 1756 1732 is-GBUMV.tmp 28 PID 1732 wrote to memory of 1756 1732 is-GBUMV.tmp 28 PID 1756 wrote to memory of 2000 1756 grsearcher83.exe 29 PID 1756 wrote to memory of 2000 1756 grsearcher83.exe 29 PID 1756 wrote to memory of 2000 1756 grsearcher83.exe 29 PID 1756 wrote to memory of 2000 1756 grsearcher83.exe 29 PID 1756 wrote to memory of 1944 1756 grsearcher83.exe 32 PID 1756 wrote to memory of 1944 1756 grsearcher83.exe 32 PID 1756 wrote to memory of 1944 1756 grsearcher83.exe 32 PID 1756 wrote to memory of 1944 1756 grsearcher83.exe 32 PID 1944 wrote to memory of 784 1944 cmd.exe 34 PID 1944 wrote to memory of 784 1944 cmd.exe 34 PID 1944 wrote to memory of 784 1944 cmd.exe 34 PID 1944 wrote to memory of 784 1944 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:1208 -
C:\Users\Admin\AppData\Local\Temp\is-IKOLQ.tmp\is-GBUMV.tmp"C:\Users\Admin\AppData\Local\Temp\is-IKOLQ.tmp\is-GBUMV.tmp" /SL4 $60124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1794143 547842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Program Files (x86)\grSearcher\grsearcher83.exe"C:\Program Files (x86)\grSearcher\grsearcher83.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\gUCrPzzuGynp.exe4⤵
- Executes dropped EXE
PID:2000
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "grsearcher83.exe" /f & erase "C:\Program Files (x86)\grSearcher\grsearcher83.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "grsearcher83.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:784
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.8MB
MD556435c3e9333001cb860f335ef4ed4c4
SHA180fb2c04a9f8caa061fc1ad2ecb7ff63aa6b1331
SHA2568c57faf2115e7ec25117a607799c6ca021dd2465852e576e304f273866f66f1a
SHA5128ae839363f1503bb7aa2570646694cea3e5261d226c78b44b33b37038be26a985b67e69cec73785ea7416232fdf967e51dce2a07d8eceacfe4fda7caadeed3c4
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Filesize
2.8MB
MD556435c3e9333001cb860f335ef4ed4c4
SHA180fb2c04a9f8caa061fc1ad2ecb7ff63aa6b1331
SHA2568c57faf2115e7ec25117a607799c6ca021dd2465852e576e304f273866f66f1a
SHA5128ae839363f1503bb7aa2570646694cea3e5261d226c78b44b33b37038be26a985b67e69cec73785ea7416232fdf967e51dce2a07d8eceacfe4fda7caadeed3c4
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Filesize
659KB
MD534a3efb47055787f7a4537fb08fb93ec
SHA17396195a1bc60f31bb90b5c8abf4b4ce95ec06f9
SHA256fe0505386751f6c7a49d4b3594cc99c8936a9906e49c595934e586f0b9a9e409
SHA512055b18c604aa583f0150f39e564438e15cd07dff308212a2c508978e2347224e2c7979f5066fb4f4e9073d5a76ee845d659214cd5f8669ce808e74d0078520ff
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Filesize
659KB
MD534a3efb47055787f7a4537fb08fb93ec
SHA17396195a1bc60f31bb90b5c8abf4b4ce95ec06f9
SHA256fe0505386751f6c7a49d4b3594cc99c8936a9906e49c595934e586f0b9a9e409
SHA512055b18c604aa583f0150f39e564438e15cd07dff308212a2c508978e2347224e2c7979f5066fb4f4e9073d5a76ee845d659214cd5f8669ce808e74d0078520ff
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
2.8MB
MD556435c3e9333001cb860f335ef4ed4c4
SHA180fb2c04a9f8caa061fc1ad2ecb7ff63aa6b1331
SHA2568c57faf2115e7ec25117a607799c6ca021dd2465852e576e304f273866f66f1a
SHA5128ae839363f1503bb7aa2570646694cea3e5261d226c78b44b33b37038be26a985b67e69cec73785ea7416232fdf967e51dce2a07d8eceacfe4fda7caadeed3c4
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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
659KB
MD534a3efb47055787f7a4537fb08fb93ec
SHA17396195a1bc60f31bb90b5c8abf4b4ce95ec06f9
SHA256fe0505386751f6c7a49d4b3594cc99c8936a9906e49c595934e586f0b9a9e409
SHA512055b18c604aa583f0150f39e564438e15cd07dff308212a2c508978e2347224e2c7979f5066fb4f4e9073d5a76ee845d659214cd5f8669ce808e74d0078520ff
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c