4ccca25d2353f6b49ae459bc91f4a86e85b897d1a4e4c29abb8b7ae4c0ca492b

Analysis

max time kernel
135s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 08:30

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General

Target

2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe
Size

52KB
MD5

b6e6af0e4a0d7d80db75c0689926cece
SHA1

04f6534d06add7584022106212c64c1e74d4cf20
SHA256

4ccca25d2353f6b49ae459bc91f4a86e85b897d1a4e4c29abb8b7ae4c0ca492b
SHA512

ab84397afd61e8396b64bd765c27f8251851a79be1acdee947bdef025fb9b66d93f992d1dfcd4bb27e10ebfe7d512a1863312275cb943f51bc2c49ccd4273d20
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIO:aq7tdgI2MyzNORQtOflIwoHNV2XBFV75

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327d-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2980	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 3456 wrote to memory of 2980	3456	2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe	82
PID 3456 wrote to memory of 2980	3456	2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe	82
PID 3456 wrote to memory of 2980	3456	2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_b6e6af0e4a0d7d80db75c0689926cece_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3456
- 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:2980

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
52KB

MD5
ebd8bac48fb1f9d41c487a26a15f2c14

SHA1
9923d8fd9609a75646084702eed99a08db6ea138

SHA256
e5404e4b71ec034320a490a4388ffb00682b892be5ad0fbf9b8913268b8ab001

SHA512
e02bd4d6852396f6a52d8e397cf9d08101b13daf04ce38ab21cceb8572c9ac28f88dff3571505b40f55a8ac449342d5463fc1a3d80b02f569d36f2d938926229

Download Submit
memory/2980-25-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3456-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3456-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3456-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download