b93cf3625e9e64f7cc9832687728da6af4e2e70b9f3fcaece9f51d0d9f498852

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 12:33

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General

Target

2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe
Size

63KB
MD5

d3f52cead965409f08000e8b36455087
SHA1

ace4aa4b0e8e121dac271e8e5359fa4134caa1d8
SHA256

b93cf3625e9e64f7cc9832687728da6af4e2e70b9f3fcaece9f51d0d9f498852
SHA512

7a0c8746d49a521e12224c40394139309ae068b1a0fba675c82150fb9b65631a4ebcb811c5ee5c27c15869ab08dc47ed341a1be306b4e9aed0b2080817ee84b1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293X:aq7tdgI2MyzNORQtOflIwoHNV2XBFV71

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b49-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b49-12.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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4156	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 3968 wrote to memory of 4156	3968	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	83
PID 3968 wrote to memory of 4156	3968	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	83
PID 3968 wrote to memory of 4156	3968	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:4156

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
63KB

MD5
603741fb4084c7c2b1a997091ed3ee3b

SHA1
27a3c05d0e97f51c39748470f0ae981d324caf61

SHA256
b8672567aaf1865c26ec2c2064dc8faecb20497be0862c2a32a4ecbef6942444

SHA512
11510eb8299ad107609f5c9f3fdda67af4c999df18b6e5135395effa32dcb9ef3ac959529b03b61e5cdf8e838b454c92cddfc8780e09f50d54430b108cf61439

Download Submit
memory/3968-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3968-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3968-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4156-25-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download