48e45cf00a90ef766751b1ce6ca8d189165d40650ba80247e76cfa6584578ca3

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
14/10/2024, 03:36

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe
Size

55KB
MD5

6f55c818bb2eeb3f43602a617df9fcab
SHA1

80081ca58fe54ddc653f3a126d86b382b8d68849
SHA256

48e45cf00a90ef766751b1ce6ca8d189165d40650ba80247e76cfa6584578ca3
SHA512

2f53f8a8b09758bcd341915ee79447615008e4e5e4ef8046fcc758c895ac6700cf4d505f51140a4759be188d09b38583c2442d0d734c41febb652a91b2a46f14
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP4CWN:b7/y28wZEjbnouy8G76iH/NLp+dN

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1812	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2508	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2508-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x0008000000012102-11.dat	upx
behavioral1/memory/1812-17-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/1812-27-0x0000000000400000-0x000000000040E000-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	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2508	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe
1812	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 1812	2508	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe	30
PID 2508 wrote to memory of 1812	2508	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe	30
PID 2508 wrote to memory of 1812	2508	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe	30
PID 2508 wrote to memory of 1812	2508	2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-14_6f55c818bb2eeb3f43602a617df9fcab_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2508
- 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:1812

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

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

Filesize
55KB

MD5
d4cce4ac374eaacf20dc60671f9feadc

SHA1
57cdbb912547bfedfa80f6dcbf2436ec4c06d378

SHA256
dffe4564253d33fadd0b83e252c2aabe4eec357a2ef97a8f0a6610d8e9a06302

SHA512
08b17516c7974fd659720a64d4d7458e5cfa41446e3ff42208b31805e01098ff9c497a07a35b3b7cc93f4cffa9537c34499a40cbf9aa2d4b94e8efb836bef6d6

Download Submit
memory/1812-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1812-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1812-27-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2508-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2508-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2508-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2508-9-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2508-14-0x0000000000720000-0x000000000072E000-memory.dmp

Filesize
56KB

Download