c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183

Analysis

max time kernel
150s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
11/08/2026, 13:04

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General

Target
c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
Size 30.2MB
Sample260811-qa5zystdlh
SHA256 c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183
MD5 cdc7090ab0330cc6bc915434dce90827
SHA1 e0a66c04c8ef9bdf262bbc9c7e07881586e45456
SHA512 37e8d811834eed8da2fb254304b8315b9486caa13bec064a943ee61e378c8cd98c6c7778546951e16a20e374e354605c692f4a76f6be7a9bdc8aa4d5b78a4944
SSDEEP 786432:3UQfYO/CtpaM1mrrZBiT/BCmSJZW8Qk69s:3UPhE
TLSH
T1DA678D40E797ABA4C8860431205FBB3BA7385D198319CBF3D7D46E75A8737C1197AB0A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

4^/10

discovery

Malware Config

Signatures

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\RustDesk\log\portable-service\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183_rCURRENT.log	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
File opened for modification	C:\Windows\SystemTemp\shared_memory-rs\shmem_F3504920242C178A	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1360	1972	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 3 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	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
608	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
608	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	608	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 608	1972	c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe	89

C:\Users\Admin\AppData\Local\Temp\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
"C:\Users\Admin\AppData\Local\Temp\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Users\Admin\AppData\Local\Temp\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
  "C:\Users\Admin\AppData\Local\Temp\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe" --portable-service --portable-service-shmem-name=_portable_service_1972_b0212cba
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:608
- - C:\Users\Admin\AppData\Local\Temp\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe
    "C:\Users\Admin\AppData\Local\Temp\c1621c589b5564daaa7bccd3276c34348529ba749890de50dde077731f749183.exe" --run-as-system --portable-service-shmem-name=_portable_service_1972_b0212cba
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1972 -s 1160
  2⤵
  - Program crash
  PID:1360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1972 -ip 1972
1⤵
PID:1800

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

shared_memory_portable_service_1972_b0212cba

Path C:\ProgramData\RustDesk\portable_service_shmem\shared_memory_portable_service_1972_b0212cba
Size 23B
SHA256 a2ea8977266f110cd6d14b4af6e62f242fafef89cd62119c4b6ff6e66034eec2
MD5 74701fe1940f48dcdb8c0f76f04bd6e7
SHA1 73abb11dfcda1adb84c0c8cc155ed87d3e90554a
SHA512 4f35c7cb4ee4b3c5f9707813fdd6bed92ab8874891519a8d74abe5a651e8b716d260dc2a38330ec86a8bddc4dc285444bc79ac56fa438790a8e1e8bab51fbbc7
MD5 SHA1 SHA512

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