6b6a8bce86d1c34390e5152af255d7fe1d16409e01219b771b49409f6f6a1c58

Analysis

max time kernel
140s
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
26/03/2024, 11:47

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General

Target

2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe
Size

44KB
MD5

899f499ed6a854b2fbe3e7d5cdc5dd14
SHA1

4bf5a09d193338ec561036eae3bb4fe6b0810d76
SHA256

6b6a8bce86d1c34390e5152af255d7fe1d16409e01219b771b49409f6f6a1c58
SHA512

cc73a6b5584ecbb74a1e91f20eaeae745203fe0dd0f81c35838fd7acc23a8fafcefd1b9f04ee86928959e086c3700c0f9d928e7991d58e174504c9499b601308
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

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

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2964	hurok.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 4200 wrote to memory of 2964	4200	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	90
PID 4200 wrote to memory of 2964	4200	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	90
PID 4200 wrote to memory of 2964	4200	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2964

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\hurok.exe

Filesize
44KB

MD5
3e0aaee2e8d3b2276ef0b0f4d91ede28

SHA1
791abb62c2573a14138e8ffa624473c90b53040c

SHA256
b22445224f764baa616f0e62ee1885f4bfce715780185dff6bfb5bfad38725b4

SHA512
c4bf0f6ab5d8e4a9fa69f3e1c3a5f05b85fc63e44be2adf9090b3216edd984e329560143a26cc0c7620f6a80a354e303bd75994b077c6ffb5d0cf24ca14075ae

Download Submit
memory/2964-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4200-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4200-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4200-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download