544a39ed05208387d1864902a5679f493cd3d188308d690ffa3249fd117e52ec

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 00:28

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General

Target

2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
Size

83KB
MD5

2b6ad7edba6c3d6a9eaa445141d26903
SHA1

d6080830b17b44eb7f16f3c86640b985a3808f1a
SHA256

544a39ed05208387d1864902a5679f493cd3d188308d690ffa3249fd117e52ec
SHA512

1de6d33b469b3e625b98f4d6cab5388a8cb606f0c5df37355e90fa37dca233412fd9e23726770448988c1636c14d198eadf479e35982ca0925956e294488a4fb
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1na:zCsanOtEvwDpjk

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023210-13.dat	CryptoLocker_rule2
behavioral2/memory/4292-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/928-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023210-13.dat	CryptoLocker_set1
behavioral2/memory/4292-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/928-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023210-13.dat	UPX
behavioral2/memory/4292-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/928-26-0x0000000000500000-0x0000000000510000-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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
928	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023210-13.dat	upx
behavioral2/memory/4292-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/928-26-0x0000000000500000-0x0000000000510000-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 4292 wrote to memory of 928	4292	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	88
PID 4292 wrote to memory of 928	4292	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	88
PID 4292 wrote to memory of 928	4292	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:928

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
83KB

MD5
52e2a820c2ee578cd284a410abf3d401

SHA1
0479232463cbeb94350eee99598fecbe548e7c02

SHA256
efea4cba372784664fddcd0603cf7e358430c4c2e7f6a591a73e8f78644d19b6

SHA512
67240eb8c53a31a84ff11c200f7ddc341b118dc747b8f55e43379d4f262ebec75f0f880bbcd2921fbb05710908c2f70e810627974fa8f333062c72640cdb7952

Download Submit
memory/928-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/928-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/928-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4292-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4292-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4292-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4292-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4292-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download