8d0924529d5c552934488b47608682ce202da5f8da0f5b6fe757bfc199ca1585

Analysis

max time kernel
135s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 12:34

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General

Target

2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe
Size

46KB
MD5

ac023cacda71a94ae2a3b9e9291b1ca2
SHA1

6452de33662622c2d5a68ed6744ef873e227022c
SHA256

8d0924529d5c552934488b47608682ce202da5f8da0f5b6fe757bfc199ca1585
SHA512

54513b19544480db771a3766f8d9678fef9308b0f70f721a1b9c711c9eb716f5e43a30fb33affaa55d7af4bf670817581fd4f7b815338bd81f73fc0fdaa66561
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxs:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023130-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023130-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2676	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 2916 wrote to memory of 2676	2916	2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe	84
PID 2916 wrote to memory of 2676	2916	2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe	84
PID 2916 wrote to memory of 2676	2916	2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_ac023cacda71a94ae2a3b9e9291b1ca2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2916
- 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:2676

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
46KB

MD5
31617c96b06f677acd5dc694e93c1ef9

SHA1
a2f59565a529438faebd34f07ea3dbe227f69abc

SHA256
0f0c8475af09798e8f817e309a8ccea4afeb8f1faabaccb79dc50a2a8c7c4e1f

SHA512
3785f305b3d0af1ea276dffcccab3ba879dc10e0ebd8abdd0128fd7ca512e22130d580c8d3ed2ec692aa1676dc48c0d638e227795ecf73cf13e614a5ff30acc7

Download Submit
memory/2676-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2916-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2916-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2916-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download