bbccd212964246daaaaa2860057eb12363b0a82d8dfb07246a56ac0c285a559c

Analysis

max time kernel
134s
max time network
146s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02/09/2024, 05:22

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General

Target

2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe
Size

33KB
MD5

5627cdc969776efa83134455759461d9
SHA1

0665d4fae00aca5e87502d5d0014a6ce8ea54f45
SHA256

bbccd212964246daaaaa2860057eb12363b0a82d8dfb07246a56ac0c285a559c
SHA512

1dc5436b7d8ae48b9d7ac3aa0eb08dcad5678ff33e6e8e4916ce4680303bf1e6758d9b3072b7ed1b22852f133021ca7905d71ecd91200dc0963ddcf8e801507a
SSDEEP

768:bROjawZEjbhxnbcuyD7U9kXfn62tH/1/LpP+Z:bRO2wZEjbnouy8Gv6iH/NLp0

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1436	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2292	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2292-0-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral1/files/0x000c000000016d28-11.dat	upx
behavioral1/memory/1436-16-0x0000000000400000-0x000000000040D000-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	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2292	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe
1436	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 1436	2292	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe	30
PID 2292 wrote to memory of 1436	2292	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe	30
PID 2292 wrote to memory of 1436	2292	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe	30
PID 2292 wrote to memory of 1436	2292	2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-02_5627cdc969776efa83134455759461d9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2292
- 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:1436

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

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Downloads

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

Filesize
33KB

MD5
5064d3e3e91debd4d2b25936e9c59d08

SHA1
0e17371472182b5ccb7293a46a04072605ff125d

SHA256
2d4cef909a25891711f10130e147526afe6eb461dfba9604e2294157c0e4109c

SHA512
fbaa6531f6929f5e7f6901a25bd0a68c1ff84d46e625e4c3cfc3bbadb02b1dbde26db9f540c7cf9473f122999820aebfe60c019f5f00e1edb97a5895d7c2c556

Download Submit
memory/1436-16-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1436-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2292-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2292-1-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2292-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2292-2-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2292-14-0x00000000004D0000-0x00000000004DD000-memory.dmp

Filesize
52KB

Download