9922a3809ad2c481544186dd15b1cca8522884bafca885fc25e73a7d2cd0c5c2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 03:32

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General

Target

2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe
Size

90KB
MD5

154dfc2a8b080efa2325450db484684f
SHA1

474d7f2fb9fbf9b86681c7b7697f9e2d88e7290e
SHA256

9922a3809ad2c481544186dd15b1cca8522884bafca885fc25e73a7d2cd0c5c2
SHA512

04872ce5ad3f09731770fb9009b718faf40115103b4657708bc9a59e684a1a94ef25408a092873e8d899b13c35f97eef224e9b7a2836a2cdaac32405602d1d21
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAA/U:n6a+1SEOtEvwDpjYYvQd2PT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023289-13.dat	CryptoLocker_rule2
behavioral2/memory/1660-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3756-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023289-13.dat	CryptoLocker_set1
behavioral2/memory/1660-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3756-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0009000000023289-13.dat	UPX
behavioral2/memory/1660-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3756-26-0x0000000000500000-0x0000000000510000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3756	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023289-13.dat	upx
behavioral2/memory/1660-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3756-26-0x0000000000500000-0x0000000000510000-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 1660 wrote to memory of 3756	1660	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	81
PID 1660 wrote to memory of 3756	1660	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	81
PID 1660 wrote to memory of 3756	1660	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3756

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
90KB

MD5
27c718403b15e23fea89e8d3ea3231de

SHA1
381d09f546159e178d43891c8cb8b2c2aa398ef4

SHA256
6c15b347a3af728114e13f33ef228de6d7d1d7482d9a9f73e5ed2c71213787b0

SHA512
2e27fb66e81f15cf26132647231e70a620ee7d6751c54e2fcdc9b4350747cb858e65bfb795e556ea4b6405e68aa9426d822135911298b48c122c9b4e84deca2d

Download Submit
memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1660-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1660-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1660-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1660-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3756-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3756-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3756-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download