3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c

Analysis

max time kernel
133s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2022, 07:19

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General

Target

3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe
Size

19KB
MD5

41a0b34d448aab0ad0f306d3d2624340
SHA1

8aa26f0cd0c71589af339d650747e11667ccc529
SHA256

3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c
SHA512

1c45d4080bd3cec100a4fc7037e7409de15faf9bcbeaf41e5fbb0fc0d885d4cfff70b8b805d0988dfce093b2cc80d6accbec2f4a7d4479b024bb866c83ca4e62
SSDEEP

384:+4A/RQ9MmFu407uONQKbnctdIZKyLV9UtG1+zH2mp35timK:9A/a9B07haO39OjDrpK

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3092	svchost.exe

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{59923FE1-D439-4D4D-85DB-611FD4FF5AFB}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{C68B141B-5DD0-4FDD-9AAF-200DC00C1F2E}.catalogItem	svchost.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3092	svchost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 3092	1928	3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe	79
PID 1928 wrote to memory of 3092	1928	3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe	79

C:\Users\Admin\AppData\Local\Temp\3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe
"C:\Users\Admin\AppData\Local\Temp\3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:3092

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:2128

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
19KB

MD5
41a0b34d448aab0ad0f306d3d2624340

SHA1
8aa26f0cd0c71589af339d650747e11667ccc529

SHA256
3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c

SHA512
1c45d4080bd3cec100a4fc7037e7409de15faf9bcbeaf41e5fbb0fc0d885d4cfff70b8b805d0988dfce093b2cc80d6accbec2f4a7d4479b024bb866c83ca4e62

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
19KB

MD5
41a0b34d448aab0ad0f306d3d2624340

SHA1
8aa26f0cd0c71589af339d650747e11667ccc529

SHA256
3ff9eaf1c50b6cf33eb91cb12440cd694ba9ac09fe162af5120d2d63c05bf38c

SHA512
1c45d4080bd3cec100a4fc7037e7409de15faf9bcbeaf41e5fbb0fc0d885d4cfff70b8b805d0988dfce093b2cc80d6accbec2f4a7d4479b024bb866c83ca4e62

Download Submit
memory/1928-132-0x00007FFD6AFB0000-0x00007FFD6B9E6000-memory.dmp

Filesize
10.2MB

Download
memory/3092-136-0x00007FFD6AFB0000-0x00007FFD6B9E6000-memory.dmp

Filesize
10.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads