62894f17ab44288854d66214e6240bf7a1a2d4a22cf0c522d8e92f466b46cd41

Analysis

max time kernel
575s
max time network
505s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2023 16:15

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General

Target

smime.p7s
Size

2KB
MD5

90f272de29722597c2a3b05fee801af0
SHA1

70049b78de36a4e34566dda8ec0365788495f7e3
SHA256

62894f17ab44288854d66214e6240bf7a1a2d4a22cf0c522d8e92f466b46cd41
SHA512

ab946c4554ca93c8fb54059c19757bfea6916e4ae7ad0f14d543d15a9257831b5755f5e39e864337aca1efc93279067248e4c1ad02e74aa45767ea65c9343d28

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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\certmgr.msc	mmc.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3572	mmc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	3572	mmc.exe
Token: SeIncBasePriorityPrivilege	3572	mmc.exe
Token: 33	3572	mmc.exe
Token: SeIncBasePriorityPrivilege	3572	mmc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3572	mmc.exe
3572	mmc.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 3572	5052	rundll32.exe	86
PID 5052 wrote to memory of 3572	5052	rundll32.exe	86

C:\Windows\system32\rundll32.exe
C:\Windows\system32\\rundll32.exe cryptext.dll,CryptExtOpenPKCS7 C:\Users\Admin\AppData\Local\Temp\smime.p7s
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Windows\System32\mmc.exe
  "C:\Windows\System32\mmc.exe" C:\Windows\system32\certmgr.msc /certmgr:FileName="C:\Users\Admin\AppData\Local\Temp\smime.p7s"
  2⤵
  - Drops file in System32 directory
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3572

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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