e3da5135d847992f536188354258dd3a06fb9c6c73ace9bde48232ada68e1e2a

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 01:49

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General

Target

2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe
Size

126KB
MD5

b96e2ce42b7292c9539196577329cebb
SHA1

4f71dd1f4d4c664b261cc35f0b15fe3d425c1e92
SHA256

e3da5135d847992f536188354258dd3a06fb9c6c73ace9bde48232ada68e1e2a
SHA512

d9becba53978fd3d7dfd3a3283a732c0dc2354fb9ca971ade6fef3b45b8e4ddc46083a60bc8f9ae5eadeb0c6aa1c6af317289497da0e1e0ad326b50fb80bacf3
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eC:AnBdOOtEvwDpj6zM

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002312a-13.dat	CryptoLocker_rule2
behavioral2/memory/376-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1840-23-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/376-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002312a-13.dat	CryptoLocker_set1
behavioral2/memory/376-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1840-23-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/376-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000600000002312a-13.dat	UPX
behavioral2/memory/376-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1840-23-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/376-27-0x0000000000500000-0x000000000050F000-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
376	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000600000002312a-13.dat	upx
behavioral2/memory/376-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1840-23-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/376-27-0x0000000000500000-0x000000000050F000-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 1840 wrote to memory of 376	1840	2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe	86
PID 1840 wrote to memory of 376	1840	2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe	86
PID 1840 wrote to memory of 376	1840	2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_b96e2ce42b7292c9539196577329cebb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:376

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
126KB

MD5
9ba8492f9639a3abef3ef1bc016f6345

SHA1
03cf177310854b92e42b47121bff7494ddcd8d7e

SHA256
c25cd4044ef864d1e62a76cd723c7672e3530721eec70a247e1d42c1809118a3

SHA512
08e80a9276b0130ada1d12358659f16ea9d275870423ea9ca8df6b5c7096462e4f098bec066ecc26b240cc403920d18fd929da4732ba48510226ed5a7ef14d2a

Download Submit
memory/376-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/376-19-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/376-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/376-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1840-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1840-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1840-2-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1840-3-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1840-23-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download