9bc7ca04df2b10d5c67523008bc9c278c4ea830c5f55444a7266fb7ba86625da

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 16:58

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General

Target

2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe
Size

23KB
MD5

82d9e05e368d3f98d8112b10676ec6eb
SHA1

b408f142921ff04138bf5f1c0aa446b94f72e8cb
SHA256

9bc7ca04df2b10d5c67523008bc9c278c4ea830c5f55444a7266fb7ba86625da
SHA512

51a6b86fb0c8c08cc47dd5a35bd24984257307c39818fc12d5a1f89429c41758b5fbec858e986fe1541ac38deffc0c647ac646f7580dfcb7174eba075d0340ec
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HjUB:bVCPwFRo6CpwXFXSqQXfjAq

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3800-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_rule2
behavioral2/memory/3800-18-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3284-19-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3284-28-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3800-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x000800000002327d-13.dat	UPX
behavioral2/memory/3800-18-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/3284-19-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/3284-28-0x0000000008000000-0x000000000800E000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3284	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3800-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x000800000002327d-13.dat	upx
behavioral2/memory/3800-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/3284-19-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/3284-28-0x0000000008000000-0x000000000800E000-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 3800 wrote to memory of 3284	3800	2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe	83
PID 3800 wrote to memory of 3284	3800	2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe	83
PID 3800 wrote to memory of 3284	3800	2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_82d9e05e368d3f98d8112b10676ec6eb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3800
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3284

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\hasfj.exe

Filesize
23KB

MD5
597691e44376c83a267fd12e719c83d0

SHA1
8eeccda104cc907a0532fc01564a4817d6ea5c10

SHA256
10d26d217b316e3aa8068085073d656f0a5b88e67ba7d80ade60c9c1bb1333e8

SHA512
f8911e76ee2001b5f1597a8169932d328724b5704f4e35ea5d91349434d718d3acf5e5bbb3e511c9e8bf0be4409296e22e1c68c91f62f9563f165e9b718bb8bb

Download Submit
memory/3284-19-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3284-21-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/3284-27-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3284-28-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3800-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3800-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3800-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3800-9-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3800-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download