c894729f6186bcac39c9c627a2634a7a3896e55a626db17a086daded78f6fa77

Analysis

max time kernel
88s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
21/07/2024, 15:37

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General

Target

$R0/Uninstall Silent Client.exe
Size

125KB
MD5

09b4e6c39953e6f74b44f30826b08d52
SHA1

77ceb0fd565d6a184b636d02e75831b3492adcb6
SHA256

569becee5e5903aae373a407e4e2f34cbeaa842068f725bcc22e4d2f56cdd9d3
SHA512

9843397baa6b4ccb665c739181b7fed481432941bb5ce869f3e0ef52eab036f0608d42a2b46b46c2c66c40f23dd99485ae280bee3776475f23cd2ac285849e80
SSDEEP

3072:6n77v00hEoDEtauimf92EMu2s5YKo+XVFCqaH2tvhOEA1RJCir86SrSrv6Ia3P:6740IjvJ7o+iqs2t0EyL+yaf

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
736	Un_A.exe

Loads dropped DLL 6 IoCs

pid	Process
736	Un_A.exe
736	Un_A.exe
736	Un_A.exe
736	Un_A.exe
736	Un_A.exe
736	Un_A.exe

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

System Information Discovery
T1082

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
1000	tasklist.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
736	Un_A.exe
736	Un_A.exe
1000	tasklist.exe
1000	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1000	tasklist.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 736	2852	Uninstall Silent Client.exe	82
PID 2852 wrote to memory of 736	2852	Uninstall Silent Client.exe	82
PID 2852 wrote to memory of 736	2852	Uninstall Silent Client.exe	82
PID 736 wrote to memory of 332	736	Un_A.exe	83
PID 736 wrote to memory of 332	736	Un_A.exe	83
PID 736 wrote to memory of 332	736	Un_A.exe	83
PID 332 wrote to memory of 1000	332	cmd.exe	85
PID 332 wrote to memory of 1000	332	cmd.exe	85
PID 332 wrote to memory of 1000	332	cmd.exe	85
PID 332 wrote to memory of 1976	332	cmd.exe	86
PID 332 wrote to memory of 1976	332	cmd.exe	86
PID 332 wrote to memory of 1976	332	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Silent Client.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Silent Client.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2852
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:736
- - 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⤵
    - Suspicious use of WriteProcessMemory
    PID:332
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq Silent Client.exe"
      4⤵
      Enumerates processes with tasklist
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1000
  - - C:\Windows\SysWOW64\find.exe
      C:\Windows\System32\find.exe "Silent Client.exe"
      4⤵
      PID:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nswBDB3.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

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C:\Users\Admin\AppData\Local\Temp\nswBDB3.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

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C:\Users\Admin\AppData\Local\Temp\nswBDB3.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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C:\Users\Admin\AppData\Local\Temp\nswBDB3.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
125KB

MD5
09b4e6c39953e6f74b44f30826b08d52

SHA1
77ceb0fd565d6a184b636d02e75831b3492adcb6

SHA256
569becee5e5903aae373a407e4e2f34cbeaa842068f725bcc22e4d2f56cdd9d3

SHA512
9843397baa6b4ccb665c739181b7fed481432941bb5ce869f3e0ef52eab036f0608d42a2b46b46c2c66c40f23dd99485ae280bee3776475f23cd2ac285849e80

Download Submit