a740bf0ba109ff5da913aeb4a3736437402bfc1c0be1b23b7cd690f41ef4a693

Analysis

max time kernel
598s
max time network
388s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
23/07/2026, 22:54

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General

Target
$R0/Uninstall Silent Client.exe
Size 134KB
Sample260723-2vr5dade59
SHA256 a740bf0ba109ff5da913aeb4a3736437402bfc1c0be1b23b7cd690f41ef4a693
MD5 6262e26d1fbe0ac0f18bfb47b8a77e7d
SHA1 b6a39405b1792fdfa3cf9bdd927576d1c087aee4
SHA512 447a104e313dfe92cb1107d2404041d6e37dfc7f99ce6dbb6cba6f9728bdc7b9a1e3b4794139300a52a373a500ab588d8466b6d4e5f5e6d35819996652ea7f0c
SSDEEP 3072:+n77v00hEoDEtauK1fe2zsD6+Gf7aH2tvhOEA1RJCir86SrSrv6Ia3U:+740IIf+m7s2t0EyL+yak
TLSH
T187D3F111B7A0C563D9F30F325AFA93DB6AB2F11124684B873B80275E3EA6791DA0D711
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery execution

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2044	Un_A.exe

Loads dropped DLL 6 IoCs

pid	Process
2044	Un_A.exe
2044	Un_A.exe
2044	Un_A.exe
2044	Un_A.exe
2044	Un_A.exe
2044	Un_A.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
3988	tasklist.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3844	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	find.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasklist.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Uninstall Silent Client.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2044	Un_A.exe
2044	Un_A.exe
3988	tasklist.exe
3988	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	tasklist.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 672 wrote to memory of 2044	672	Uninstall Silent Client.exe	81
PID 2044 wrote to memory of 3844	2044	Un_A.exe	82
PID 3844 wrote to memory of 3988	3844	cmd.exe	84
PID 3844 wrote to memory of 4364	3844	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Silent Client.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Silent Client.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:672
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\$R0\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq Silent Client.exe" | %SYSTEMROOT%\System32\find.exe "Silent Client.exe"
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3844
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq Silent Client.exe"
      4⤵
      Enumerates processes with tasklist
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3988
  - - C:\Windows\SysWOW64\find.exe
      C:\Windows\System32\find.exe "Silent Client.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:4364

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

StdUtils.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6231.tmp\StdUtils.dll
Size 100KB
SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
MD5 c6a6e03f77c313b267498515488c5740
SHA1 3d49fc2784b9450962ed6b82b46e9c3c957d7c15
SHA512 9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803
SSDEEP 3072:WNuZmJ9TDP3ahD2TF7Rq9cJNPhF9vyHf:WNuZ81zaAFHhF9v
TLSH
T125A33B62A2FA9CF5E4E70B3D1469BB264CBB7B383431D93F2342054B8534586DA2D35B
MD5 SHA1 SHA512 SSDEEP TLSH

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System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6231.tmp\System.dll
Size 12KB
SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 48df0911f0484cbe2a8cdd5362140b63c41ee457
SHA512 c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9
SSDEEP 192:1enY0LWelt70elWjvfstJcVtwtYbjnIOg5AaDnbC7ypXhtIj:18PJlt70esj0Mt9vn6ay6
TLSH
T1BA428E12977049F2F1A0183C10A67F265FBEAE5C1BE445A39FE380867D652DF9436343
MD5 SHA1 SHA512 SSDEEP TLSH

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WinShell.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6231.tmp\WinShell.dll
Size 3KB
SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
MD5 1cc7c37b7e0c8cd8bf04b6cc283e1e56
SHA1 0b9519763be6625bd5abce175dcc59c96d100d4c
SHA512 7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f
TLSH
T16A51365F13BED7A4C3071738A6FBDC85749B440012C659558BB2172ABF141E0BB3CD08
MD5 SHA1 SHA512 TLSH

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nsExec.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6231.tmp\nsExec.dll
Size 6KB
SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
MD5 ec0504e6b8a11d5aad43b296beeb84b2
SHA1 91b5ce085130c8c7194d66b2439ec9e1c206497c
SHA512 3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57
SSDEEP 96:YjHFiKaoggCtJzTlKXb0tbo68qD853Ns7GgmkNq3m+s:JbogRtJzTlNR8qD85uGgmkNr
TLSH
T173D109B836C20CF3D54E46743E22381713FEE4761B7502A18B976ED61D92AE2FE20781
MD5 SHA1 SHA512 SSDEEP TLSH

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Un_A.exe

Path C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
Size 134KB
SHA256 a740bf0ba109ff5da913aeb4a3736437402bfc1c0be1b23b7cd690f41ef4a693
MD5 6262e26d1fbe0ac0f18bfb47b8a77e7d
SHA1 b6a39405b1792fdfa3cf9bdd927576d1c087aee4
SHA512 447a104e313dfe92cb1107d2404041d6e37dfc7f99ce6dbb6cba6f9728bdc7b9a1e3b4794139300a52a373a500ab588d8466b6d4e5f5e6d35819996652ea7f0c
SSDEEP 3072:+n77v00hEoDEtauK1fe2zsD6+Gf7aH2tvhOEA1RJCir86SrSrv6Ia3U:+740IIf+m7s2t0EyL+yak
TLSH
T187D3F111B7A0C563D9F30F325AFA93DB6AB2F11124684B873B80275E3EA6791DA0D711
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download