c07b7d878d8e0238fe87c26cf56bec6b1aeea2d0385d161cf44d88b1cf7d2ee3

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 12:39

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General

Target

2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe
Size

50KB
MD5

5e96bc43d730b8f8e677b0646daea362
SHA1

d6b415671328d328bd6a8c47de412f4557244a0f
SHA256

c07b7d878d8e0238fe87c26cf56bec6b1aeea2d0385d161cf44d88b1cf7d2ee3
SHA512

668449dd169698ac3c999fd09923707e6fbc53c195469e658f3adfb587e685faa188e617b5b8f4a4ede861d8edcb6d4db28f8d53de29de5457102a65eccee757
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcXF:X6QFElP6n+gJBMOtEvwDpjBtExmlE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231bd-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231bd-12.dat	CryptoLocker_set1

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1228	asih.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	3616	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 1228	5040	2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe	87
PID 5040 wrote to memory of 1228	5040	2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe	87
PID 5040 wrote to memory of 1228	5040	2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_5e96bc43d730b8f8e677b0646daea362_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1228

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:3116

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
50KB

MD5
96448ee55e64108daeffda5460e92d5f

SHA1
a1a5cf8c7cdbc63afa546baf4f1b15534a29bf3f

SHA256
d22bdee1f5d23239f4a0cea45f616365ca2a39a231ded0bda3250e3b1143bc3f

SHA512
4460c07a391d9647ffe44ba34b66c07c4aede14ff81a715fe5e3c10ff037c9c0656aeb66148a53f8660765bc948e7277bc5ff663a81d4cd53e7745efe8187388

Download Submit
memory/1228-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1228-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3616-24-0x0000020352280000-0x0000020352290000-memory.dmp

Filesize
64KB

Download
memory/3616-40-0x0000020352380000-0x0000020352390000-memory.dmp

Filesize
64KB

Download
memory/3616-56-0x000002035A6F0000-0x000002035A6F1000-memory.dmp

Filesize
4KB

Download
memory/3616-58-0x000002035A720000-0x000002035A721000-memory.dmp

Filesize
4KB

Download
memory/3616-59-0x000002035A720000-0x000002035A721000-memory.dmp

Filesize
4KB

Download
memory/3616-60-0x000002035A830000-0x000002035A831000-memory.dmp

Filesize
4KB

Download
memory/5040-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/5040-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/5040-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download