80a97158281ad3a2d4fccc0ca9cb92b16f824d128418f977abb4cc7b098fdd69

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 11:00

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General

Target

8efbbcfb771a2062e0c1c957f3589f8b.exe
Size

159KB
MD5

8efbbcfb771a2062e0c1c957f3589f8b
SHA1

4a7a431cab162690d984d5dcf352de0e57fb7d8d
SHA256

80a97158281ad3a2d4fccc0ca9cb92b16f824d128418f977abb4cc7b098fdd69
SHA512

6ed83b4b29c094c7924b0b8ffa9c720166bbf78555200dc58adf58da5255b874b319c412185f26e6205435edfcd47613bb7cedca1654866241b3ae8a87db0324
SSDEEP

3072:J7IAwHYNoG5/A3GhSWN0kmMm7gFzYVR3HuFWRHRzPq6vrX9qDe:J8ATXm1LNuFuNnX4D

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	8efbbcfb771a2062e0c1c957f3589f8b.exe

Executes dropped EXE 1 IoCs

pid	Process
3320	rsgyh.exe

Loads dropped DLL 1 IoCs

pid	Process
3320	rsgyh.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4624	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4352	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3320	rsgyh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	taskkill.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3320	rsgyh.exe
3320	rsgyh.exe
3320	rsgyh.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3320	rsgyh.exe
3320	rsgyh.exe
3320	rsgyh.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5980 wrote to memory of 3408	5980	8efbbcfb771a2062e0c1c957f3589f8b.exe	89
PID 5980 wrote to memory of 3408	5980	8efbbcfb771a2062e0c1c957f3589f8b.exe	89
PID 5980 wrote to memory of 3408	5980	8efbbcfb771a2062e0c1c957f3589f8b.exe	89
PID 3408 wrote to memory of 4624	3408	cmd.exe	91
PID 3408 wrote to memory of 4624	3408	cmd.exe	91
PID 3408 wrote to memory of 4624	3408	cmd.exe	91
PID 3408 wrote to memory of 4352	3408	cmd.exe	93
PID 3408 wrote to memory of 4352	3408	cmd.exe	93
PID 3408 wrote to memory of 4352	3408	cmd.exe	93
PID 3408 wrote to memory of 3320	3408	cmd.exe	97
PID 3408 wrote to memory of 3320	3408	cmd.exe	97
PID 3408 wrote to memory of 3320	3408	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\8efbbcfb771a2062e0c1c957f3589f8b.exe
"C:\Users\Admin\AppData\Local\Temp\8efbbcfb771a2062e0c1c957f3589f8b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 5980 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8efbbcfb771a2062e0c1c957f3589f8b.exe" & start C:\Users\Admin\AppData\Local\rsgyh.exe -f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 5980
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4624
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:4352
- - C:\Users\Admin\AppData\Local\rsgyh.exe
    C:\Users\Admin\AppData\Local\rsgyh.exe -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\rsgyh.exe

Filesize
159KB

MD5
8efbbcfb771a2062e0c1c957f3589f8b

SHA1
4a7a431cab162690d984d5dcf352de0e57fb7d8d

SHA256
80a97158281ad3a2d4fccc0ca9cb92b16f824d128418f977abb4cc7b098fdd69

SHA512
6ed83b4b29c094c7924b0b8ffa9c720166bbf78555200dc58adf58da5255b874b319c412185f26e6205435edfcd47613bb7cedca1654866241b3ae8a87db0324

Download Submit
memory/3320-14-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-20-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-29-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-27-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-10-0x00000000004A0000-0x00000000004A2000-memory.dmp

Filesize
8KB

Download
memory/3320-8-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-25-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-16-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-12-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-18-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/3320-23-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/5980-0-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/5980-2-0x00000000006B0000-0x00000000006B2000-memory.dmp

Filesize
8KB

Download
memory/5980-1-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download
memory/5980-4-0x0000000001000000-0x00000000010D1000-memory.dmp

Filesize
836KB

Download