c8ccb64cbca90b255029f6a87c9ca4057841fa611af2c41342fd731aa493efa5

Analysis

max time kernel
146s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 12:47

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General

Target

2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe
Size

62KB
MD5

6c87c6eef2cbafb4aa6802f5ae3a3fc7
SHA1

20392d842a5270b3deeae8a7a7c885d762b78bb9
SHA256

c8ccb64cbca90b255029f6a87c9ca4057841fa611af2c41342fd731aa493efa5
SHA512

7b1da6b0ca10affc698fb1a8dd5aa684ee317b0f08ed71d4048cd43e06f4ade4fdd46bd31a82c0c735b4a638061910805931f078ad5f4c3e3338f7568de5261e
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmhkA:V6a+pOtEvwDpjv5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation	2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4140	asih.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 2164 wrote to memory of 4140	2164	2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe	88
PID 2164 wrote to memory of 4140	2164	2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe	88
PID 2164 wrote to memory of 4140	2164	2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_6c87c6eef2cbafb4aa6802f5ae3a3fc7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4140

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
b73a9d58ae2346e47dc6f75def94a571

SHA1
ef40e800ec232bcd8c29255397c61e232433c561

SHA256
93ae3565875c42ed85ba616e2c969996482cb3d19d746495e4ddcca2157caba9

SHA512
7d018e43dadbf98537ed0aedb61224c5877a2d8468b0ab9894fbf254ebec1cb2f2ae8496db2ed182911226ca9cf78c135264b7c8509575731430322193069750

Download Submit
memory/2164-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2164-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2164-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4140-18-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4140-17-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download