46739d37cd98d229b15e7c0b947c4d2e055e61ab0524e3c1057c58c68a1ac6bc

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2024 21:37

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General

Target

2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe
Size

33KB
MD5

bcd23056cfb05a49a6390ce9dd3346af
SHA1

c485e38dab61272e9fbcb3589098e0fd78a39905
SHA256

46739d37cd98d229b15e7c0b947c4d2e055e61ab0524e3c1057c58c68a1ac6bc
SHA512

9c87d4465257bfdb685ba3d35ccba342c04c3862ad529870636bd82f61396b9a5a3513b904cc90c3c6a88690cdcb5eaf1281b316990960af7a68798cd1264e5b
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B+OOxq+:b7o/2n1TCraU6GD1a4Xt9hOV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	CryptoLocker_rule2

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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2136	rewok.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 2136	4892	2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe	90
PID 4892 wrote to memory of 2136	4892	2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe	90
PID 4892 wrote to memory of 2136	4892	2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_bcd23056cfb05a49a6390ce9dd3346af_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2136

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\rewok.exe

Filesize
33KB

MD5
572a87a62e0ca7d52f4ad7c53b3428b8

SHA1
056c7bd6e8c4bacd14ce4ecb25fcc7ef35ea682f

SHA256
2139258f37ac4e4e76b4ad8617b7bffd6fd1ca3bbd3029ab5a638eca3d990683

SHA512
0316691af0ea6b5b15f07a088b2d098f4626573d650deb6474e820a983ad62718bd96a831513623ca717d1632e1495ce13ce940fb98fadf72b0234bd01a3c8c4

Download Submit
memory/2136-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4892-0-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/4892-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download