5763c84371b61031f5a8fcce44a8d5b935680341f9dbd7a8308ef413a42d1c2e

Analysis

max time kernel
143s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 06:52

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General

Target

2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe
Size

55KB
MD5

c6d0e221b1fc233399613c65c202fdc5
SHA1

6623cd79c3d89d55df3637fd48d7b61a2c58cf34
SHA256

5763c84371b61031f5a8fcce44a8d5b935680341f9dbd7a8308ef413a42d1c2e
SHA512

5231bdf73f47fdea927596d4419e54ab5a4bc07dc43d87565b700499a3556b277b794d04461cec024e7906b0c157805dca61cfc9bdee3558b1c7e982b28d790c
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbP/MMt:xj+VGMOtEvwDpjubXMMt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4384-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326c-13.dat	CryptoLocker_rule2
behavioral2/memory/4384-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2916-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4384-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002326c-13.dat	CryptoLocker_set1
behavioral2/memory/4384-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2916-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4384-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002326c-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4384-19-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2916-26-0x0000000000500000-0x0000000000510000-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	2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	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 4384 wrote to memory of 2916	4384	2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe	93
PID 4384 wrote to memory of 2916	4384	2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe	93
PID 4384 wrote to memory of 2916	4384	2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_c6d0e221b1fc233399613c65c202fdc5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2916

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=4240 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:4500

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
55KB

MD5
a16a6bbd2f33f1b91986e881f015c230

SHA1
7164a94f465cd7888fb6d94920cebb9d34c896ff

SHA256
92f8de6ed0c46a6ed3bf1529a4e7a3bc0a395730e069beecdd08c928337d485a

SHA512
a8f57c52b5de6a0efe21ea2dba1b8efa2f59a8c9abd8ea2de81a1b1eb32806aeebbd036f2696ddd0ce0d7157a69954ba1a2115dbb4b369ec620ac1c1ee7cd524

Download Submit
memory/2916-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2916-18-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2916-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4384-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4384-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4384-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4384-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4384-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download