d25f06530424d4f26135325c02c2f890d51b14171bb8eaff0c146e6004c22228

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/03/2025, 08:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe
Size

20KB
MD5

b35283ccdd867905443e8970b6557eef
SHA1

a9734c0d5c9f8cf74a11d6c3c5414df1cea67221
SHA256

d25f06530424d4f26135325c02c2f890d51b14171bb8eaff0c146e6004c22228
SHA512

965c57ef9b1f0dbc865479d02dd722a5beedd518597a9d5f451c687aa98c9f01ad1d6cf4bad918db97e54f2be871256e5dd10f8f314942f6f128e63f375cfe58
SSDEEP

384:xG8OlX7EG+2LEjwg8SD6SSFYDTujQAf+hoGaQwbqqTn:xGFD1L/g9BSFYe0iv1Tn

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2836	pissa.exe

Loads dropped DLL 1 IoCs

pid	Process
2816	2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2816-0-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral1/files/0x0007000000012117-11.dat	upx
behavioral1/memory/2816-16-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral1/memory/2836-18-0x0000000008000000-0x000000000800C000-memory.dmp	upx
behavioral1/memory/2836-145-0x0000000008000000-0x000000000800C000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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_b35283ccdd867905443e8970b6557eef_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 2816 wrote to memory of 2836	2816	2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe	30
PID 2816 wrote to memory of 2836	2816	2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe	30
PID 2816 wrote to memory of 2836	2816	2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe	30
PID 2816 wrote to memory of 2836	2816	2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-21_b35283ccdd867905443e8970b6557eef_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2816
- 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:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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\Tar7324.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

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

Filesize
20KB

MD5
ea7498dfb8e8de0831786b3617ea50eb

SHA1
6da2021888eac88380111d510cda61c2744f1eb6

SHA256
73e5943c27eb0216b46ccc6c0fd6d64fce59dcab6ca134c8bf142e4d707e08a5

SHA512
0473c86d2fa5d0635734030748bac24ec3b97fe9b8df07eaa237c387c4c2a2750362875fce9f43a5ca06d1574bbd9d7f5563c974e6f530b814ca5c0238922584

Download Submit
memory/2816-0-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/2816-2-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2816-9-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2816-16-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/2816-1-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2816-15-0x0000000001DE0000-0x0000000001DEC000-memory.dmp

Filesize
48KB

Download
memory/2836-18-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download
memory/2836-21-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2836-20-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2836-145-0x0000000008000000-0x000000000800C000-memory.dmp

Filesize
48KB

Download