e275a6b282f913e0cebc010bc82929fd63773d42935865a1c5f54d40b6537735

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/11/2024, 06:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe
Size

55KB
MD5

40412263af899debd7675f48530e49dc
SHA1

88d4177d6c6d3bf715dae546980054e63e759ce9
SHA256

e275a6b282f913e0cebc010bc82929fd63773d42935865a1c5f54d40b6537735
SHA512

3ff473f267c125a6302c64845311f6f07aa2d7934c15f7f5c904047418df6d294668c3fa904ac93310618886c729801c0cc52fd91c5ca00860d5922680bb0458
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP1:b7/y28wZEjbnouy8G76iH/NLpv

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3044	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2284	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2284-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000a00000001225c-14.dat	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	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2284	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe
3044	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 3044	2284	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe	28
PID 2284 wrote to memory of 3044	2284	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe	28
PID 2284 wrote to memory of 3044	2284	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe	28
PID 2284 wrote to memory of 3044	2284	2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_40412263af899debd7675f48530e49dc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:3044

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
55KB

MD5
74263eb6fd356278f8412a7a17c55d10

SHA1
6445aa43377fab41e2756613b83e43441a251813

SHA256
906264ccc12323967540abd3b958274c065401fc4b05a1d88c09d522081d8190

SHA512
aa37e4d6d3629a6fcd87b3f5ed4f1c487c05ad0cc13d10a37662e6ede1fb7cfb3101303a06d5031f6369d8bdedd06f3bd5415589a031dca9ed882b6afbd5b06d

Download Submit
memory/2284-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2284-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2284-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2284-10-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3044-24-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download