ebed8d15e7300297ad607227164caf0435148ec35d0880fe3cbafaf2390c3fb9

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 06:28

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General

Target

2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe
Size

54KB
MD5

976bf70fae37f66c0518329b00dd92b6
SHA1

dc12ac1e270b0a83b19daaad7e349b71a52af8c3
SHA256

ebed8d15e7300297ad607227164caf0435148ec35d0880fe3cbafaf2390c3fb9
SHA512

82c541659778231d26b3f808115c5b4763545b1791cb8f7a3c35f9dbecdb32f1a51fc8cb95f1aa52d3690c68a94caa7b5725506734340ef9ad346cc15ce63772
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFPS:b7/y28wZEjbnouy8G76iH/NLpM

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2352	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2096	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2096-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x0007000000012117-11.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	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2096	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe
2352	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2352	2096	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe	30
PID 2096 wrote to memory of 2352	2096	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe	30
PID 2096 wrote to memory of 2352	2096	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe	30
PID 2096 wrote to memory of 2352	2096	2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_976bf70fae37f66c0518329b00dd92b6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2096
- 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:2352

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

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

Filesize
54KB

MD5
a349fa4ca07eef1513098136c4829cbf

SHA1
14aa7f7d2c6d785a3dc1851a3b571225d75a801d

SHA256
44b2f1c84990dc2c23c27c66408b9b9bf4f9fa753e3a3c2bcf79a2d56f00d244

SHA512
2c3f43fa1de908f351fa0002de8a58d29b35e0cb3e825185a7e914556472c036a85af8d1d2a9cf1db8f045bf3fc591e476bf489c890e01a23d97b8f7075c482d

Download Submit
memory/2096-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2096-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2096-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2096-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2096-16-0x0000000002FD0000-0x0000000002FDE000-memory.dmp

Filesize
56KB

Download
memory/2352-25-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download