Analysis
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max time kernel
60s -
max time network
63s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
18/11/2022, 20:47
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
General
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Target
file.exe
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Size
2.1MB
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MD5
5c204cb4b403b3958e5857aae4438ee4
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SHA1
79e489dcb113df68c2626548f88aee95908900c3
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SHA256
6cf3a02510992318797e941f28afe01e8b35674c694bfc0a7598174b9c917fbe
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SHA512
596aba05860c054e7460001cbf59de8c07b8abe3e1ac15b04e39bc411ab674dba20ddbf60c94b5f093c6574d4cc9f0fd2be190ae1e81d70539efc2847e3c3382
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SSDEEP
49152:q2SDuhYO0CaZzjlJ1y+hJtocYXPaciV5D0IP1gxYqBjSyHfRx7Pq2:rSDYYRnvJg+hJtHYXPjiV5AIKx1jXPD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1948 is-ER79B.tmp 572 grsearcher83.exe 368 xRAkW.exe -
Loads dropped DLL 6 IoCs
pid Process 1720 file.exe 1948 is-ER79B.tmp 1948 is-ER79B.tmp 1948 is-ER79B.tmp 1948 is-ER79B.tmp 572 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 opened for modification C:\Program Files (x86)\grSearcher\grsearcher83.exe is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-T5L0R.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-4FPVL.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-T711U.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-KAP84.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-8DNPG.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-71BUE.tmp is-ER79B.tmp File opened for modification C:\Program Files (x86)\grSearcher\unins000.dat is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\unins000.dat is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-HPVVN.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-2OUNJ.tmp is-ER79B.tmp File created C:\Program Files (x86)\grSearcher\is-EFVN8.tmp is-ER79B.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 1356 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 572 grsearcher83.exe 572 grsearcher83.exe 572 grsearcher83.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1356 taskkill.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1720 wrote to memory of 1948 1720 file.exe 28 PID 1948 wrote to memory of 572 1948 is-ER79B.tmp 29 PID 1948 wrote to memory of 572 1948 is-ER79B.tmp 29 PID 1948 wrote to memory of 572 1948 is-ER79B.tmp 29 PID 1948 wrote to memory of 572 1948 is-ER79B.tmp 29 PID 572 wrote to memory of 368 572 grsearcher83.exe 30 PID 572 wrote to memory of 368 572 grsearcher83.exe 30 PID 572 wrote to memory of 368 572 grsearcher83.exe 30 PID 572 wrote to memory of 368 572 grsearcher83.exe 30 PID 572 wrote to memory of 1756 572 grsearcher83.exe 33 PID 572 wrote to memory of 1756 572 grsearcher83.exe 33 PID 572 wrote to memory of 1756 572 grsearcher83.exe 33 PID 572 wrote to memory of 1756 572 grsearcher83.exe 33 PID 1756 wrote to memory of 1356 1756 cmd.exe 35 PID 1756 wrote to memory of 1356 1756 cmd.exe 35 PID 1756 wrote to memory of 1356 1756 cmd.exe 35 PID 1756 wrote to memory of 1356 1756 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:1720 -
C:\Users\Admin\AppData\Local\Temp\is-TR1PR.tmp\is-ER79B.tmp"C:\Users\Admin\AppData\Local\Temp\is-TR1PR.tmp\is-ER79B.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1982349 547842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1948 -
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:572 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xRAkW.exe4⤵
- Executes dropped EXE
PID:368
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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:1756 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "grsearcher83.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1356
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.0MB
MD58ece32facdba7d228ad6b3ac0c4ae82d
SHA19cb52da5fcbd18f1dc667054dabf3039435e483a
SHA25681e654cb9f7630382bbf2d4c49da414bd6604794f98608d14c24a7e0d0f3b7d2
SHA5120898cbe42c43ddf2fc8c722dda839f7025cd1464091e92358510e0e48845a19c7163f6c801ed0ee18efbe11c6dc56aa31f9c74a80732b02fd48c03bd3cce8505
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Filesize
3.0MB
MD58ece32facdba7d228ad6b3ac0c4ae82d
SHA19cb52da5fcbd18f1dc667054dabf3039435e483a
SHA25681e654cb9f7630382bbf2d4c49da414bd6604794f98608d14c24a7e0d0f3b7d2
SHA5120898cbe42c43ddf2fc8c722dda839f7025cd1464091e92358510e0e48845a19c7163f6c801ed0ee18efbe11c6dc56aa31f9c74a80732b02fd48c03bd3cce8505
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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
3.0MB
MD58ece32facdba7d228ad6b3ac0c4ae82d
SHA19cb52da5fcbd18f1dc667054dabf3039435e483a
SHA25681e654cb9f7630382bbf2d4c49da414bd6604794f98608d14c24a7e0d0f3b7d2
SHA5120898cbe42c43ddf2fc8c722dda839f7025cd1464091e92358510e0e48845a19c7163f6c801ed0ee18efbe11c6dc56aa31f9c74a80732b02fd48c03bd3cce8505
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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