4281e061fd4a72ddd11c9c4cc203554da97b289f077f12283195fd20c2e31900

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 09:28

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General

Target

2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe
Size

61KB
MD5

4fa9db4d94c87082e658c37892abaa40
SHA1

c1153b37f1bc7fef7795e853d4f58b809bd6a43d
SHA256

4281e061fd4a72ddd11c9c4cc203554da97b289f077f12283195fd20c2e31900
SHA512

5d2e13393f8358af37a57f5a879542613445c34d6732b61915390e7d461223cfd5e02f6c0cd52b68581c7b186b7f93f99dd74222a35e1f5dcf6c37f67da5fcd5
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLA+Nxi:X6a+SOtEvwDpjBrOw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1760	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 4256 wrote to memory of 1760	4256	2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe	88
PID 4256 wrote to memory of 1760	4256	2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe	88
PID 4256 wrote to memory of 1760	4256	2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_4fa9db4d94c87082e658c37892abaa40_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1760

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
61KB

MD5
310e7eb3766f2f8a0c99ed511f206dcc

SHA1
06d27defe819b78b644b7f9e41888c3398cdd2c0

SHA256
fd96cd679f3fcd0b614b0693de1355ba1d3425f55832d0750245f268d5a76b9b

SHA512
9dd145df0aee24af767cc1bf6d5d2325aaccce0000dfa9ddc1ba955af53133aaa87565ea66459048ba3d4fc2df70cb2b4c92cef3991e2154d70a94de913c1451

Download Submit
memory/1760-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1760-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4256-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4256-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4256-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download