1959270ce07a6bb69635842166af2c7684e4250e6eba8f94890be31d6493a11b

Analysis

max time kernel
139s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 12:32

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General

Target

2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe
Size

98KB
MD5

f5e84a656ccce4b2d0772a7df39e1382
SHA1

cc901ae9902dccbc454320409e0493550945fda4
SHA256

1959270ce07a6bb69635842166af2c7684e4250e6eba8f94890be31d6493a11b
SHA512

fa961ecabb001cac5a73b67c69ad8680692d768551963af246deb9d3c6327362084ad63a45dd755bff8b804a66efb07999da38c897c31cb776b480daf0394d7c
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWw3S:26a+2OtEvwDpjtz9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023116-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023116-12.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	2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
836	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 4428 wrote to memory of 836	4428	2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe	83
PID 4428 wrote to memory of 836	4428	2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe	83
PID 4428 wrote to memory of 836	4428	2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_f5e84a656ccce4b2d0772a7df39e1382_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4428
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:836

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
99KB

MD5
2624c02ded33dd23a2a2c8f52651238d

SHA1
52f9787692362cf67f4d7b73112f4b02e4016752

SHA256
4713af3da16eaf2cb94b541f5a7f09671655389376e5d34fe3752215bd1983a0

SHA512
4f0021ca4339c070f588627f4b138c6bc9f406fd51c5da26b327cdf88635da07b322bcc064fe9bfc44f1bb66f36176c1a58d5e5fe797552e708e3264985ac696

Download Submit
memory/836-18-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/836-17-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4428-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4428-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4428-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download