c69afd4d8b9d2eeae9c5448122df45039b0e18cc6bb424fb904b9ce99a53ec32

Analysis

max time kernel
142s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 06:08

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General

Target

2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe
Size

38KB
MD5

856c8668bf2508d7342c668825d54d1e
SHA1

1a2697ecff9a70c8bb3267d6b0b368879130889b
SHA256

c69afd4d8b9d2eeae9c5448122df45039b0e18cc6bb424fb904b9ce99a53ec32
SHA512

2b6b67e98be177bf6a6cffe322646134b72dc37a271983e30aa24de047bbe3a08aecb476ef77aab86ae561901682ea3492166897d208da4fc4cf4004cb0762e6
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLp1:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326a-13.dat	CryptoLocker_rule2
behavioral2/memory/372-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/372-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002326a-13.dat	CryptoLocker_set1
behavioral2/memory/372-25-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3468	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 372 wrote to memory of 3468	372	2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe	91
PID 372 wrote to memory of 3468	372	2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe	91
PID 372 wrote to memory of 3468	372	2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_856c8668bf2508d7342c668825d54d1e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3468

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=4256 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:2428

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
39KB

MD5
82e5b6c6f2d33a875cbcbe54eab77602

SHA1
74f1a892e9109cabc9e48fcd8c961b22cf7ee564

SHA256
33c0850bdf5173398b8dc0a1e9506c447c415900a84c565894d86ec0e4c4cc1d

SHA512
bd7472a6fae0f19fc87f347f58cfd1ac05f5b88769746250e82ce99865c8710167c78c6261468967a8dfa04fdfaf27e6d26377b30707c7b3c3934acf85ce206f

Download Submit
memory/372-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/372-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/372-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/372-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/372-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3468-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3468-19-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download