2b1181107cf764cf88a3d46525c3c84626ce47b372b3c2048c6ad0e68d728fa7

Analysis

max time kernel
135s
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
02-02-2024 18:36

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General

Target

2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe
Size

82KB
MD5

e169ee57c1ff51548144181344fe44e8
SHA1

c6e16b4d3de97a65204fef67571923a186d4bb41
SHA256

2b1181107cf764cf88a3d46525c3c84626ce47b372b3c2048c6ad0e68d728fa7
SHA512

6f3b475dbe2f6124b1cb011a7cabc2783fa829798b9d0335e3e66ddd8fbaff3bd499040bf5d7b3cecd92f314e246828f210defe232ec68513cbbea866ddde383
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPFHB:V6QFElP6n+gMQMOtEvwDpjyaLccVNld

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002311a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002311a-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	2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3276	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 3976 wrote to memory of 3276	3976	2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe	83
PID 3976 wrote to memory of 3276	3976	2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe	83
PID 3976 wrote to memory of 3276	3976	2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_e169ee57c1ff51548144181344fe44e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3276

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
82KB

MD5
fe38605d459126677fd3b0c2a0204300

SHA1
90ff0ddddac352e68a1e0a7993be59ae283c9c83

SHA256
941b670ec014a13293396b3bf2ed604c7cfcd1bd64b850fc034b23f5698800bf

SHA512
f19d1722270a25b96e76cd33a2192768b0c4257f96b5ecb59cefc706756b02ff69aed46640970802ddaeabf0555134cb4f2d05c80f14bd7b949d0bd9b6b6c145

Download Submit
memory/3276-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3276-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3976-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3976-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3976-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download