9b53b227ac53fd576afde5b0d4b9872aebdc4a71d92fa6d5a2ed6ba69fcee70e

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 04:18

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General

Target

2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe
Size

96KB
MD5

9e84f92485e7f07c36565e835d4ef262
SHA1

2caae92353e9e13a2d7a3b672950bc07c492c902
SHA256

9b53b227ac53fd576afde5b0d4b9872aebdc4a71d92fa6d5a2ed6ba69fcee70e
SHA512

e51d6623ee5290bad6ce0c4e66873aa0bb6cb0444d72d606b26f8c1a143b5edb6d791feba0db1462873411287c56218c1003d0c5ee1e4bda57b792a4a207d288
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bT:zCsanOtEvwDpjBn

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023456-13.dat	CryptoLocker_rule2
behavioral2/memory/3128-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2648-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3128-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023456-13.dat	CryptoLocker_set1
behavioral2/memory/3128-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2648-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3128-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023456-13.dat	UPX
behavioral2/memory/3128-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2648-20-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3128-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3128	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0007000000023456-13.dat	upx
behavioral2/memory/3128-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2648-20-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3128-27-0x0000000000500000-0x0000000000510000-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 2648 wrote to memory of 3128	2648	2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe	86
PID 2648 wrote to memory of 3128	2648	2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe	86
PID 2648 wrote to memory of 3128	2648	2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_9e84f92485e7f07c36565e835d4ef262_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3128

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
96KB

MD5
593fd585654d389686e3745be984646c

SHA1
7ad7f223e9f87e874dc540aeb700d310c848b271

SHA256
f4a1d11bfc9085655a76cec5e30da5919899058c468be0559f119d0c14838caa

SHA512
bbc14f9173850f63675f5f2d0d1126c81eab4dc2451283aca2ec84932bd6036bcf3797941ba840d459b2f85179dc8c8ec39786870f30808d0b101aa53c86fde9

Download Submit
memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2648-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2648-2-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2648-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2648-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3128-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3128-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3128-21-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/3128-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download