96a2e41f2074cd30bb858ed321bb9a1d87fed927aaace034677cde31e135a399

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 05:46

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General

Target

2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe
Size

33KB
MD5

a8988840b492c16a9a1af139cdb19bcb
SHA1

79f9417f280cf6a23b14b689bdb2ecedbdd4caac
SHA256

96a2e41f2074cd30bb858ed321bb9a1d87fed927aaace034677cde31e135a399
SHA512

e7ac62f20e424499cd68e6570b74f1f55b72da65a5858c7edc5f6c1ba19568028440763b7a5ef9e2b37f97d8cff1be3a14c45ddd13a1ac3a0f8db8af30a9becd
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qvYjg/i5l:b7o/2n1TCraU6GD1a4Xt9bRU6vpi5l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5012	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 3440 wrote to memory of 5012	3440	2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe	90
PID 3440 wrote to memory of 5012	3440	2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe	90
PID 3440 wrote to memory of 5012	3440	2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_a8988840b492c16a9a1af139cdb19bcb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5012

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
34KB

MD5
8f1cdc7bb6c110f16e805bfafc48ca21

SHA1
1d6da5011fde82b47956a8b4b5c5a8d8f086acfe

SHA256
1cb764f3e168efbaa93f6613b23d8319223aacf331343ff89324f9e31f7c25eb

SHA512
0071243fd23528fb5d7660e6347fe1035659f7c9f792ac26d0d188daa5fc6978bc4cfecad13a5fa278b9e1c24c5cd0add4a728ac52a2cfc839aacaafeeebe180

Download Submit
memory/3440-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3440-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3440-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5012-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download