b767255ab45ff58deeb8e3d29709fccfef6e3211efd86ba11dcb357f8fe39c0a

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 16:48

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General

Target

2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe
Size

80KB
MD5

b56b0b70ee3141e93b4b1176c4e851c7
SHA1

a9872a35ccd2cc998ac6ad8e45e06f3a9fb5bb99
SHA256

b767255ab45ff58deeb8e3d29709fccfef6e3211efd86ba11dcb357f8fe39c0a
SHA512

b2893abff95e4192524916c68b8b84a68be4b5e881e4bf399f22ad459477712902b346ec61494ae66e647090de7227708752ebb0168f4dbf53836acef1925356
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufL+3X:vCjsIOtEvwDpj5H9YvQd2c

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022747-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022747-12.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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4728	misid.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 2540 wrote to memory of 4728	2540	2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe	90
PID 2540 wrote to memory of 4728	2540	2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe	90
PID 2540 wrote to memory of 4728	2540	2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_b56b0b70ee3141e93b4b1176c4e851c7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4728

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\misid.exe

Filesize
80KB

MD5
eab56e73978d51e93004d96292b34f2c

SHA1
049cd7ea0bc20e373561af7449102c8f0f17ce9a

SHA256
1e71125dbceb410e2fa099c4fa2801a91971c19c3f295efe6776e81bbbcb456e

SHA512
b47bea5c088e3b091ed9ddc9607969797768f55c39384617f2c02913ff854b792ae9ea8175c094b4c34a33e6cb6e6a1d71895a4aa5b7fe9ef4cba833f77c7bbb

Download Submit
memory/2540-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2540-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2540-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4728-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4728-23-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download