1cf20a7dabe115db28c4cec146b9a5c9f153083a418e72ecab69bd5d9c453316

Analysis

max time kernel
139s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 04:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe
Size

61KB
MD5

0c6b2e54f5d8b41f2cb3882841fcc5e8
SHA1

9b11df8d511a76327f3c974dcc6c166380785659
SHA256

1cf20a7dabe115db28c4cec146b9a5c9f153083a418e72ecab69bd5d9c453316
SHA512

e4b963e57aa4d4eb407ee34f0d2752c9130fd85194c2cc9624db2c09a94daf240efb6405ccb7d53205f286ea7c1d43b2961b0a075be458b26075a8b55b0c748b
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmhn:V6a+pOtEvwDpjvd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023100-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023100-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3756	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 4704 wrote to memory of 3756	4704	2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe	84
PID 4704 wrote to memory of 3756	4704	2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe	84
PID 4704 wrote to memory of 3756	4704	2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_0c6b2e54f5d8b41f2cb3882841fcc5e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3756

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

Loading Replay Monitor...

Downloads

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

Filesize
62KB

MD5
c77bc955c0ee7c4a2b956cb36f2f40e2

SHA1
85ba2d3e0712f8fbbb3efb3ea537eb0097d5e5c9

SHA256
c86a3ed0489b15404b30aa6e81e4ab846fccb144bb4903c2e8dc1686480ed1fa

SHA512
dde2855e63cc9302cf6be3751459f5338cd56006509db538f96e8b67746d797fb178028196438284e802cbc65f1103f624f35a4114c57007445647c5e721a946

Download Submit
memory/3756-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3756-18-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4704-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4704-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4704-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download