fdeaa242ab8e422b160bcb1fa3d3cd689f9d9f89fd4d7a8281be8d9b0e289088

Analysis

max time kernel
86s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 00:50

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General

Target

2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_cryptolocker.exe
Size

48KB
MD5

ece99d4b74cfdb5b873d6d7a85c8a49f
SHA1

ef9c326ab10dd2d5e258a8508e9ecdb71c8d79b4
SHA256

fdeaa242ab8e422b160bcb1fa3d3cd689f9d9f89fd4d7a8281be8d9b0e289088
SHA512

c7b4accbb8d04793e6c755283933b6f4972b149fa21f56976646dba37ae6a9b9fde3431e90bdde4ec393d582f2a6523d063ad63ed790d8d5aae1068ed61380d6
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIh:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023107-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023107-12.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	2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_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
4368	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 4600 wrote to memory of 4368	4600	2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_cryptolocker.exe	88
PID 4600 wrote to memory of 4368	4600	2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_cryptolocker.exe	88
PID 4600 wrote to memory of 4368	4600	2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_ece99d4b74cfdb5b873d6d7a85c8a49f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4600
- 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:4368

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
48KB

MD5
820aec9d0848ca995ec73581c3dfe181

SHA1
c4c4f293307e0a2f9a236959ca3e3849c0343d6b

SHA256
df9143c6f2db562af15373515a582e0a1b001f58eaa40dcdccd5b2152bf42a4e

SHA512
3e821b31c2b6316e94ec6fddecaf393820311f15c3728849831718283726410bc4c6ce1378182d7e20a687dbffa1aa0c52ef4b0108db2ab4aeb0494c52c7b91e

Download Submit
memory/4368-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4600-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4600-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4600-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download