db099f231e4617fd588ba398d8a0887103606138c7e993f68a970ff420a82b2f

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
26-03-2024 18:28

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General

Target

2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe
Size

63KB
MD5

497aa90e64c23fcb5ac4f1edda846a32
SHA1

1055cdf986992005aa4288cb80a5d6d6adc5e6c3
SHA256

db099f231e4617fd588ba398d8a0887103606138c7e993f68a970ff420a82b2f
SHA512

940cdf2263dd578759a3f04a5154cb0f2dae0b2e1c4ee4c6e177d4542d6ccb3bb2ea0c81d3445d2e5a086778383dd82d1abbd21a833c3839d6840476cc590861
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSc9x:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002314a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002314a-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	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 3640 wrote to memory of 4744	3640	2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe	89
PID 3640 wrote to memory of 4744	3640	2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe	89
PID 3640 wrote to memory of 4744	3640	2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_497aa90e64c23fcb5ac4f1edda846a32_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3640
- 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:4744

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
192fe0e8d05fe9b1cc58e4f12db3f10f

SHA1
b58a7da7ea86572eb8ee35f49523c806e6481a53

SHA256
7f8953d6c9e6d11e7cef22440b0cbb3a463cd9d679e62f5747e78b79947b7ccc

SHA512
c6fdc95268243b2ac34fa90f021d22992abdc4f126c2309e7c2ab7c0a396a23e3731830bbd209f82a663bf9fc17984da056cce95b3b75d8efc1e5584e474d547

Download Submit
memory/3640-0-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/3640-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/3640-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4744-23-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download