e76ca6e5227643e1d8d01354b615bdd9607c6b878f40abe2195788d1d91e5f79

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 01:35

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General

Target

2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe
Size

42KB
MD5

d0ea9f6769e84b15c052c666172c12a2
SHA1

244f6dd8525c450157a8c110b77013414c805fc3
SHA256

e76ca6e5227643e1d8d01354b615bdd9607c6b878f40abe2195788d1d91e5f79
SHA512

27458309f7129f0733382a57274ed26a49ddfcadce2e8e7373f301e3cf2f9b1ac97c5c88c51afb17365ab7037c7a2fa7f8d1cabcff4d27e8682cc63883ea1f81
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmz4kmmw:bc/y2lkF0+BjjIw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023208-12.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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1448	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 3296 wrote to memory of 1448	3296	2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe	88
PID 3296 wrote to memory of 1448	3296	2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe	88
PID 3296 wrote to memory of 1448	3296	2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_d0ea9f6769e84b15c052c666172c12a2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3296
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1448

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
42KB

MD5
1fff79503555a9704fd20d1d9b5213bc

SHA1
47a4a732b54b72f75f4b87d5341826edf2b53425

SHA256
3b3f133d55f14a4153f25b55531c8d11096e8e3ac8bb52afa398f4fa7c6247dd

SHA512
d4160c322ecb1e8e194dac5721f9b21bd0654ee0b2b6b1f633733fe59ae2a26ba2e0b77c2fe5c7668301c2b4426f001cb217ce394daa36a9c807610df8512633

Download Submit
memory/1448-20-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/3296-0-0x0000000002320000-0x0000000002326000-memory.dmp

Filesize
24KB

Download
memory/3296-1-0x0000000002320000-0x0000000002326000-memory.dmp

Filesize
24KB

Download
memory/3296-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download