9e779e201b06c2c76203d4939f00b49b470da754a8e8cee87b66bbc7516c56f3

Analysis

max time kernel
144s
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
11/06/2024, 00:41

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General

Target

2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe
Size

61KB
MD5

c22cdd32983304b351aa500e03b7fab9
SHA1

dd19f199b8dcb8ff7b93fb54537e8d845a283155
SHA256

9e779e201b06c2c76203d4939f00b49b470da754a8e8cee87b66bbc7516c56f3
SHA512

895640a0baa8180631a8584060bc476ab701d19d777a638bcf1f796169b0e74ff151527738ded0c23dea878b741a47a90cfeeee8cb8781ea6af6be2312e4f0c5
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pd3t:H6QFElP6n+gou9cvMOtEvwDpjCpVXz3t

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1496-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b000000023242-13.dat	CryptoLocker_rule2
behavioral2/memory/1496-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1308-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1496-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b000000023242-13.dat	CryptoLocker_set1
behavioral2/memory/1496-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1308-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1496-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000b000000023242-13.dat	UPX
behavioral2/memory/1496-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1308-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1308	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1496-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000b000000023242-13.dat	upx
behavioral2/memory/1496-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1308-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1496 wrote to memory of 1308	1496	2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe	91
PID 1496 wrote to memory of 1308	1496	2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe	91
PID 1496 wrote to memory of 1308	1496	2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_c22cdd32983304b351aa500e03b7fab9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1308

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=4312 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:2148

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
61KB

MD5
32cb8aec01cda852fc7a2e6a1a9b2b15

SHA1
42bb5736c25882b7882376a54f090098ef27e0ab

SHA256
54ce0b3524fbf1c21681163f8f7bd718309513cedc24259e8dd9fa3de1d506fc

SHA512
a7b02157386db25b446898f7c3f39a327b29696bdfd64a54ce41a8192d61a87eed8d1432724dd5741f406f6273958db7765f1526bfadb9500f2384e3f846d118

Download Submit
memory/1308-18-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1308-24-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1308-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1496-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1496-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1496-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1496-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1496-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download