acfccc67c960df5c6fe1aa43b8bb02378e1bf3efc3a5970e97aad8b28e94ee29

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 00:42

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General

Target

2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe
Size

46KB
MD5

05be16e8a45b99805e04a302f3626c1f
SHA1

0b826cdb1f0604c7015ec84159f6e09c77a6ab01
SHA256

acfccc67c960df5c6fe1aa43b8bb02378e1bf3efc3a5970e97aad8b28e94ee29
SHA512

ed6cc9ada211118badb727244b89b5e026e5ecfcaf8831cf9a7161de061d694840427bb6a836af7f4fd240288b2f43d5effceb3f98da524807a587b133f2b122
SSDEEP

384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdsQz:XS5nQJ24LR1bytOOtEvwDpjNbP/bsS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1000-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_rule2
behavioral2/memory/1000-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3488-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1000-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3488-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1000-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000001db2a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1000-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3488-26-0x0000000000500000-0x000000000050F000-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3488	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 1000 wrote to memory of 3488	1000	2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe	96
PID 1000 wrote to memory of 3488	1000	2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe	96
PID 1000 wrote to memory of 3488	1000	2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_05be16e8a45b99805e04a302f3626c1f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3488

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=3920 --field-trial-handle=3084,i,14217130992253490921,11543335378077656547,262144 --variations-seed-version /prefetch:8
1⤵
PID:2816

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
46KB

MD5
73e62b32c995d0095241b6072c6b6eca

SHA1
6e6487b5c0f0052246870f15a2b15335b57e62e8

SHA256
946864a22e2c53551eb8410d7220f89626025411ecb19d776d240c0d8faf05fe

SHA512
041d441cdf39957ab21848388edfa1180195a378ebdef2359531ac227c8d96ba89ea653beb18f7a5292ffc399796890809539ecc2a6222f87516c1441363a3d4

Download Submit
memory/1000-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1000-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1000-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1000-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/1000-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3488-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3488-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3488-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download