5ef2c3e8cc01856df5845d48bac4648f3c18643e21b76d8294062e02381e3d9f

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25-05-2024 20:27

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General

Target

2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe
Size

65KB
MD5

404c5317025b33734059cdec312fa9c8
SHA1

73a60216d69515a0c97e2e0ed422f907e39ad2ba
SHA256

5ef2c3e8cc01856df5845d48bac4648f3c18643e21b76d8294062e02381e3d9f
SHA512

33ce6abf8a5b44b53f3681cd55b361f474573d14c2ddfab1d2ab6350ac40534fa6b0cbb38d55ad357938b93a4f6376d277ac157ce7dd783832b2d35bb1e99b39
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293CiU:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7C

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233d8-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233d8-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1260	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 2400 wrote to memory of 1260	2400	2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe	82
PID 2400 wrote to memory of 1260	2400	2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe	82
PID 2400 wrote to memory of 1260	2400	2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_404c5317025b33734059cdec312fa9c8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2400
- 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:1260

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
65KB

MD5
07c629fb068d52ba5b0b656ba0ba274a

SHA1
2df044c091de778655821f97bc8ce430793f624b

SHA256
d04e8222f563d320c24d89d1e849052e5d151977087a0a07177978cd32f16f6c

SHA512
d33657c3eb5dc8ffacb2e8ea16b3c3d9ef61dee81e472800dc9af4fd34eb9d77a8089c7f3461ccbc14439ba29c2ee2736d6d7c7563de9113a3479a739e587342

Download Submit
memory/2400-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2400-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2400-8-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download