12bff448ca6e9ce8470f33116e1943ca88916ab90cfe728b09b536eb35bf0013

Analysis

max time kernel
153s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 12:38

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General

Target

2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe
Size

69KB
MD5

9e0b045629be8212918f45a3b6c8a37a
SHA1

9e0320ed036db76731e7663637d5ff29eaa2edd5
SHA256

12bff448ca6e9ce8470f33116e1943ca88916ab90cfe728b09b536eb35bf0013
SHA512

409bd0d5569fbde6a5682654bd30c12af7b6ac8bee5d0e336032df0f0f9889926bd71a5d0d3991892b82acaee99e09931b99dda9a107b5a51973dbbd49b582e0
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU1Y:DW60sllyWOtEvwDpjwF850

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1672-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023206-13.dat	CryptoLocker_rule2
behavioral2/memory/4164-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1672-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1672-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023206-13.dat	CryptoLocker_set1
behavioral2/memory/4164-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1672-19-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4164	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 1672 wrote to memory of 4164	1672	2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe	87
PID 1672 wrote to memory of 4164	1672	2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe	87
PID 1672 wrote to memory of 4164	1672	2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_9e0b045629be8212918f45a3b6c8a37a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4164

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\asih.exe

Filesize
69KB

MD5
820796e59745e173e7f7df334b06511f

SHA1
5b4a6fbb8577bfe9169bf248bcdcf1a8dd970bb1

SHA256
fcfade8749ebc969bb1783523886db246eac5dd7423f26e2b7f9708cc131dc27

SHA512
64e998052ab002659043f6921c0cbe39f656a4e6492474999728b6ecf7e1e3578ea22b98b7fedcf19cb53278e827df586297c75123f4f4cc56a0af4940a2ab10

Download Submit
memory/1672-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1672-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1672-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1672-3-0x00000000008A0000-0x00000000008A6000-memory.dmp

Filesize
24KB

Download
memory/1672-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4164-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4164-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4164-22-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download