23858618390e7c9cb904e681753c28341c93bac96587d090ca7aae7725e16fe8

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 21:31

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General

Target

2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe
Size

96KB
MD5

6e2d1c6aafc56bdb5b1c8bcec493a509
SHA1

55228a89ac70b3c6398c94c5781bc4e6ce736789
SHA256

23858618390e7c9cb904e681753c28341c93bac96587d090ca7aae7725e16fe8
SHA512

947d4069e5d9475e2c5b0d48401946a5fbff00f56e71e834c3b56dcf89c19fa6ff2a6bf364f21bedbdba7760fbddb333def9cedba1ad3257ca550c56c1bac157
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/b5:zCsanOtEvwDpjBN

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3616-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/3616-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4768-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4768-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3616-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_set1
behavioral2/memory/3616-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4768-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4768-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3616-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x001c00000001e97e-13.dat	UPX
behavioral2/memory/3616-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4768-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4768-26-0x0000000000500000-0x0000000000510000-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4768	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3616-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x001c00000001e97e-13.dat	upx
behavioral2/memory/3616-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4768-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4768-26-0x0000000000500000-0x0000000000510000-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 3616 wrote to memory of 4768	3616	2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe	85
PID 3616 wrote to memory of 4768	3616	2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe	85
PID 3616 wrote to memory of 4768	3616	2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_6e2d1c6aafc56bdb5b1c8bcec493a509_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4768

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
96KB

MD5
fca340f562df0fb18bf7269579eb56ac

SHA1
9ae4fbc8c74f6343f0aacc92232d00db8ba865ea

SHA256
3d7c296e131d8a88c7d64114db74595a7c13c1368d0e94bc0ed48277f6f91fb2

SHA512
176132a9aa7662c4a7248fd125bf9b696e236efcb025dfb0adc01ad1281b7fc704a97b5d4d7df8c73b8105c1f2962373ff9f47cd35eeeffe64a3529f48d0a230

Download Submit
memory/3616-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3616-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3616-3-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3616-2-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3616-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4768-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4768-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download