0d74a4d98cbc8bc97354925f88ad761ca312ad0da7e96ea4e896db4c5f75af49

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21/03/2025, 08:02

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General

Target

2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe
Size

20KB
MD5

a503ee6b6d2e6f240e5557305ba46fa7
SHA1

06ca289c3edc87f17bcb91692a2dbdc30b33dfea
SHA256

0d74a4d98cbc8bc97354925f88ad761ca312ad0da7e96ea4e896db4c5f75af49
SHA512

581eb85fb098c676a57cb8ce0ed8ddbd94620e29616d900b8416bc0ae215905561238227705324297845aa47a8a36f578665d164b1c82517aaf070dcef66f855
SSDEEP

384:xG8OlX7EG+2LEjwg8SD6SSFYDTujQAf+hoGaQwbqqTG:xGFD1L/g9BSFYe0iv1TG

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1972	pissa.exe

Loads dropped DLL 1 IoCs

pid	Process
1732	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1732-0-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral1/files/0x000b00000001225e-11.dat	upx
behavioral1/memory/1972-17-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral1/memory/1732-15-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral1/memory/1972-294-0x0000000008000000-0x000000000800C000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pissa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 1972	1732	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	30
PID 1732 wrote to memory of 1972	1732	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	30
PID 1732 wrote to memory of 1972	1732	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	30
PID 1732 wrote to memory of 1972	1732	2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-21_a503ee6b6d2e6f240e5557305ba46fa7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
71KB

MD5
83142242e97b8953c386f988aa694e4a

SHA1
833ed12fc15b356136dcdd27c61a50f59c5c7d50

SHA256
d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

SHA512
bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6465.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

Download Submit
\Users\Admin\AppData\Local\Temp\pissa.exe

Filesize
20KB

MD5
a7c9ddd45aa5329c8f8c6993038309ea

SHA1
f684ea382812445625a54e0bd53e52f4f7b19612

SHA256
46f9d2b2283e8e9d1847864901ca0ddf669cdd9ab30c66d0f7476315be7f367c

SHA512
f2790560fe082aabf2e09bd44357559704fd683e88cd85af811b3741cb89e9c5ed5e77ccac747bff303daa035dbef6d5a457d4cd42a3207f0af795c242fb3529

Download Submit
memory/1732-0-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/1732-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1732-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1732-10-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1732-15-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/1972-17-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/1972-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1972-26-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1972-294-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download