b38c426ef691ec85ce20d26aee06cf55580d04894606faf053c017a777d48861

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 11:31

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General

Target

2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe
Size

38KB
MD5

2fce26a3f566de1012c1f82b9da8772d
SHA1

6c1a295ca86d6ac772626d3770db59227d4d0a7e
SHA256

b38c426ef691ec85ce20d26aee06cf55580d04894606faf053c017a777d48861
SHA512

4e62d71ac7167054f5558b7ee4a3e4255c844ea970fb7b983c168076c9ef4c761874f44b8da6e53dbce873670c09516d80c0c00bac0048c32cfd8fcbf5b39f5b
SSDEEP

384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5cZnfX2flqG:bgX4zYcgTEu6QOaryfjqDDw3sCu5mXWJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023317-12.dat	CryptoLocker_rule2

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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3304	hasfj.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 2228 wrote to memory of 3304	2228	2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe	95
PID 2228 wrote to memory of 3304	2228	2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe	95
PID 2228 wrote to memory of 3304	2228	2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_2fce26a3f566de1012c1f82b9da8772d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3304

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1412 --field-trial-handle=2244,i,861925222566734100,5228329984880658054,262144 --variations-seed-version /prefetch:8
1⤵
PID:1820

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\hasfj.exe

Filesize
39KB

MD5
42c305b87bc30611d1fca3ef20ce8d67

SHA1
25805abb5b015afa677c17eaab1c4c1d3f9ed896

SHA256
909e70765012a5dd756c4e4b4a6723ccf8a7d6f50ef4e3e6d1f147d7eb4f191c

SHA512
8d7b74eae47c9a4065b98746207cb89230c50ac6e3672d985a8558a8e8b83caad9992ab372c5b68372365e5ce254e5fe301251b533340ea5765d622427bec274

Download Submit
memory/2228-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2228-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2228-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3304-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3304-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download