818c212f95bd24861bbfacac4cf2a9e307aa58b2f5bd7bf1f0815c4e36ed45d0

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2024 01:31

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General

Target

2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe
Size

63KB
MD5

2ad261b268f02efa503978afb41bbef3
SHA1

8229c3750ee39d2a9a3d58d4a9f3c4a2ed9e8b52
SHA256

818c212f95bd24861bbfacac4cf2a9e307aa58b2f5bd7bf1f0815c4e36ed45d0
SHA512

ac2201e7a8fce074d1a5bab1f1393fd515a61270d8d8e72b9605edca8fb12cfa0ea881f224a33421a1006dbcb846188a4aa5a944af5ad6d8d751a1d0dbdbfd64
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSA9k:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002323d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002323d-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1384	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 5096 wrote to memory of 1384	5096	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	87
PID 5096 wrote to memory of 1384	5096	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	87
PID 5096 wrote to memory of 1384	5096	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5096
- 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:1384

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
eb900a1b79f88c837d2971d6f2797b87

SHA1
3237f74334b8317c8ffd1ef3ac8a9feef0f64240

SHA256
71bfb6e62e6a6aca513bbe2a9359827829cd4390b2d97f96ea73d1b1a67f6be8

SHA512
6a158953c0f3d14ebb8904555abf0d1a045abe6680e05426df57a90bbff2d221ae7934985989ab5a70bea4b547469b66f8f4fb7a7b5f47bc731b3651ae3a66b6

Download Submit
memory/1384-25-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/5096-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/5096-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/5096-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download