9d1374b6d5910873fcebc199ff6bc58245c6d7030791b7e12dae4856bf4516db

Analysis

max time kernel
143s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 05:17

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General

Target

2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe
Size

82KB
MD5

d5c2051ea1d5f07c7b2fc667c85b76b2
SHA1

3a3d0e69244506eab0d831bd4c6b9d3d302afded
SHA256

9d1374b6d5910873fcebc199ff6bc58245c6d7030791b7e12dae4856bf4516db
SHA512

f2ff6d15f52e1386763f770b6019207bb56e328cb31369520a796bf5ebe9382e52f2417b52474a81ddba0b635c144522ab30898a97e8006c465870e770e430c9
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1Q:zCsanOtEvwDpj2

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4152-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023116-13.dat	CryptoLocker_rule2
behavioral2/memory/4152-21-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4904-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4152-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023116-13.dat	CryptoLocker_set1
behavioral2/memory/4152-21-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4904-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4152-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0006000000023116-13.dat	UPX
behavioral2/memory/4152-21-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4904-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4904	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4152-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0006000000023116-13.dat	upx
behavioral2/memory/4152-21-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4904-26-0x0000000000500000-0x0000000000510000-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 4152 wrote to memory of 4904	4152	2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe	87
PID 4152 wrote to memory of 4904	4152	2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe	87
PID 4152 wrote to memory of 4904	4152	2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_d5c2051ea1d5f07c7b2fc667c85b76b2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4904

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\misid.exe

Filesize
82KB

MD5
000f85a802a756401812c3f9f7de3034

SHA1
5650731d09b62b8e59428d5571ceafd436db49f4

SHA256
2f15767c3ce7a441fcde4b12420f94b99df66630e79fe11e33fac22ceeab77e0

SHA512
b648b51e6c2583ba427cfc675c6316d1500dcd3b54366aec4ff66f4b6120914ebf1f1173534d771e884c5a359cb74524f022dce4a4f12d66dff6ffcd47a1bde9

Download Submit
memory/4152-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4152-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4152-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4152-3-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4152-21-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4904-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4904-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4904-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download