adddc2ef604daf09282c05e90c1125543d1efec7c0276bac92cc73efeebdbec0

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
04/09/2024, 18:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe
Size

55KB
MD5

c4805d693c36b59e29684c9d00351e08
SHA1

5009af35ef050cd7d66164f1598b0f3f2498b9c4
SHA256

adddc2ef604daf09282c05e90c1125543d1efec7c0276bac92cc73efeebdbec0
SHA512

6ed0c0c1ac8015582e7061a908c784ba6ecb84b91781f2fe05831453001a2e820272e32ad1d5af33497cba79b587044906fe986e98aad824781cf983b16a2eb4
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP8xLp:b7/y28wZEjbnouy8G76iH/NLp6t

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2720	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2212	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000a0000000120d6-15.dat	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	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2212	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe
2720	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2720	2212	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe	30
PID 2212 wrote to memory of 2720	2212	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe	30
PID 2212 wrote to memory of 2720	2212	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe	30
PID 2212 wrote to memory of 2720	2212	2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-04_c4805d693c36b59e29684c9d00351e08_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2212
- 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:2720

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\Local\Temp\rewok.exe

Filesize
55KB

MD5
aff0261666a1df16b1fd4e00dba54787

SHA1
75d294c78ae5cdcaf166bb22e254eabf7b99d5fb

SHA256
7838bb96ccdb2fcdcd7d828979a8abbc1ce915d88a8a6426e28c9f83ecc4127c

SHA512
3188f957e4eb043481f4437389de59cea3169476c8b180ec6ec82e115e7111e92a57e1c4052b2a6d5f632844e99980fe4371adf5a30acb82dd7fbd581c51037d

Download Submit
memory/2212-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2212-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2212-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2212-9-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2720-24-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download