5e00795e3a3d1f7a03877fed059af937b892167054964786cd73963a54d7347c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 05:20

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General

Target

2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe
Size

89KB
MD5

cc87ff7ebd4ef4a12adcd81d6a6d66c9
SHA1

468b0161737758f8531ef7290fb6cb396515bbd3
SHA256

5e00795e3a3d1f7a03877fed059af937b892167054964786cd73963a54d7347c
SHA512

bf8868eb57fc0bb3ad94adab4a213b5bc9995af4523a6a72504bd00b9513724eefbd234f68a05f1c491d6a3786d87b31afbc0673f1ea912980a4dba07c96db92
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAA2:n6a+1SEOtEvwDpjYYvQd2Pd

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2588-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023420-13.dat	CryptoLocker_rule2
behavioral2/memory/2588-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2116-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2588-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023420-13.dat	CryptoLocker_set1
behavioral2/memory/2588-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2116-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2588-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023420-13.dat	UPX
behavioral2/memory/2588-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2116-26-0x0000000000500000-0x0000000000510000-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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2116	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2588-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023420-13.dat	upx
behavioral2/memory/2588-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2116-26-0x0000000000500000-0x0000000000510000-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 2588 wrote to memory of 2116	2588	2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe	87
PID 2588 wrote to memory of 2116	2588	2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe	87
PID 2588 wrote to memory of 2116	2588	2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_cc87ff7ebd4ef4a12adcd81d6a6d66c9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2116

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
89KB

MD5
b9b196a62cd3187744888bfd717413af

SHA1
482d0e72002165c65d17ee52e22067968060433e

SHA256
c813c7fa7fe1165c6d38cf1c9682a5c5962ed8812f95162e5921d121784012d7

SHA512
45e13d3f135a605329277784c84c614bc7f6689eb5cb116097c7eb9253bb147072853a6e135927440dbe938c4827013b530dc8f91b16011cdb953f6f1c5db93a

Download Submit
memory/2116-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2116-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2116-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2588-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2588-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2588-2-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2588-3-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2588-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download