f8dc2ec887aa6daf548809c1d30879eb8699c64c920104d5485ab8b6fdb8d51c

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26/08/2024, 07:11

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General

Target

2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe
Size

55KB
MD5

e06af5f4aea595eb9a5e16e1cd9fc2d1
SHA1

9d02c88288f40a5ef82784837c4a83208ac46f9f
SHA256

f8dc2ec887aa6daf548809c1d30879eb8699c64c920104d5485ab8b6fdb8d51c
SHA512

c6b7acf7fb4a4391b5fcd7e15447be7bb81d9e65a46a08303cb3db9be3f5d65da32f1dcf3203174c89c2e678cb55b9ad2305b3afedea4f5049d3938a9cf707f7
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP82:b7/y28wZEjbnouy8G76iH/NLpL

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2188	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
828	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/828-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/2188-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000b000000014678-14.dat	upx
behavioral1/memory/2188-26-0x0000000000400000-0x000000000040E000-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	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
828	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe
2188	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 828 wrote to memory of 2188	828	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe	30
PID 828 wrote to memory of 2188	828	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe	30
PID 828 wrote to memory of 2188	828	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe	30
PID 828 wrote to memory of 2188	828	2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-26_e06af5f4aea595eb9a5e16e1cd9fc2d1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:828
- 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:2188

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

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Downloads

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

Filesize
55KB

MD5
717b2c028a4660fe78e7fd4a99ca2045

SHA1
58c42450d6caa095b9fd22ab72fdd4fe2469e883

SHA256
962ef7608c86c9df9db9c082baf046979535d28bfc9a190b6d37616415e205a9

SHA512
5ed47def3574a16effbac0110353484bdadf753b14f885cba9985bc8ecc4fb7ae16e054f2c4e0006755244f3fb6bdb2af1f639d459664d59534882a6973ca15a

Download Submit
memory/828-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/828-9-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/828-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/828-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2188-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2188-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2188-26-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download