48a31191d917171e07aa35055462c4f1efa318843f557192ecf7ed19aa6f2aa1

Analysis

max time kernel
144s
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
19/04/2024, 12:31

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General

Target

2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe
Size

40KB
MD5

32e9b8cbc7e3d9d25b573e011f434daa
SHA1

b230309db674dd5aaed691c97fba00cb20bcb140
SHA256

48a31191d917171e07aa35055462c4f1efa318843f557192ecf7ed19aa6f2aa1
SHA512

abd7fe5eaa6a4c8d866384de53b66f7d87e954ac532f3478e0b73b8be9ee47d0d5e7ff2b2bb40acf2549aecbd537df0c3f8d2d86c9f94e560848006e78cfdfd7
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsZp:i5nkFGMOtEvwDpjR+viHs3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3404-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3404-11-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023252-14.dat	CryptoLocker_rule2
behavioral2/memory/4476-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3404-11-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4476-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3404-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3404-11-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023252-14.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4476-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4476	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 3404 wrote to memory of 4476	3404	2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe	91
PID 3404 wrote to memory of 4476	3404	2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe	91
PID 3404 wrote to memory of 4476	3404	2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4476

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=4440 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:2112

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
40KB

MD5
386a351674d40fe98a284dd08b824295

SHA1
f6db18e04f09f008b36388f16d48832630b39acf

SHA256
c41fd9fad50e5f0d6f7d1f44a69e787b6a2bbc45fc499a4b52320d32affe3787

SHA512
f00716bec8bee1a9ee91c9421ea958bb42142ca17f95c71eb868be4b1907ed747826b1607cafc151227327b70f1bc9a04e2ebae1494e9fccda636c6586338c73

Download Submit
memory/3404-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3404-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3404-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3404-3-0x0000000000790000-0x0000000000796000-memory.dmp

Filesize
24KB

Download
memory/3404-11-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4476-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4476-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4476-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download