2f7b4c47477b01776fdc86aed4ffb7a0b0ad35ed9dcb96e73c044dfbab2f918f

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 00:56

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General

Target

2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
Size

49KB
MD5

a2c4cfe593ae221aa9375a5a8d553802
SHA1

b43d2ae47e95c6900dc741e021eb221d2b8c3d26
SHA256

2f7b4c47477b01776fdc86aed4ffb7a0b0ad35ed9dcb96e73c044dfbab2f918f
SHA512

2087227d6c8201e27abb231cfb11da4d071cbaa187a2db80ffcfbe053fb60de820221412e539ecd89bb9e5c8478d805ab2b317374b4f77cb313480303a9986c5
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIBm:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
984	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 3156 wrote to memory of 984	3156	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	88
PID 3156 wrote to memory of 984	3156	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	88
PID 3156 wrote to memory of 984	3156	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3156
- 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:984

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
50KB

MD5
b76dcd3585902db31033f020761143c8

SHA1
fd5712b418999b3c8a4827ce27ab2e57011aa71f

SHA256
0a7a1dcf1ec42ebda68a32cfde227682f0609696c4ca72d87cc964c0cd861f8a

SHA512
e9cb7fbc0590f6c3cf9ce314bef5f2c4927de7792272da70efef04fc8b6f57300a3b641d76bfe906364973f3ba4246d37d7e06b58b1d1db68385ff05f2157dab

Download Submit
memory/984-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3156-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3156-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3156-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download