49bb383d6ad27314d9b6898f4713a40878e42f91c95c02ab72b5237d68d3c856

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 12:40

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General

Target

2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe
Size

82KB
MD5

a7d3d361f208cb8223adf3e5327849b8
SHA1

c789eedae822ebb4e233067bb5748ed381d28b54
SHA256

49bb383d6ad27314d9b6898f4713a40878e42f91c95c02ab72b5237d68d3c856
SHA512

54422b570d6bb66584a5800d93fc988d383913df71526063cb5aef769a0287d5b72aeaefca201c0af248a53f4b0ccfdd64d166b03215b06ba6ee24c861e48657
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPFHFb:V6QFElP6n+gMQMOtEvwDpjyaLccVNlN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023121-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023121-12.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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	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 4720 wrote to memory of 2356	4720	2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe	86
PID 4720 wrote to memory of 2356	4720	2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe	86
PID 4720 wrote to memory of 2356	4720	2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_a7d3d361f208cb8223adf3e5327849b8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2356

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
d76c4019678fc5ccbd4a7a9d6590e7a4

SHA1
6c28bbc84cf1956972735169f907322618ef0ca5

SHA256
bde98429623681c281d36a77a09d33ae52fc7492acecaf4eab7ef5cd1d3237b6

SHA512
f16808578ddc1b70b88dd86a443adbdabe8e39303a7a17a85e349933a3bb00fa762efb71c79f09c93be9b37d0811cdcf055260b244c943b700d0d0841234d3cb

Download Submit
memory/2356-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2356-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4720-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4720-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4720-2-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download