278b8c001d7e7e856a84e2e10fe1ec37e3f13153dc0f9ec2f12e0f2bfac4bc37

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
22/08/2023, 16:06

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General

Target

6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe
Size

28KB
MD5

6a191cb869d0664c37054d6c28da47f7
SHA1

867477b61522e77e120d6ee8d75fc7f5c3c837ed
SHA256

278b8c001d7e7e856a84e2e10fe1ec37e3f13153dc0f9ec2f12e0f2bfac4bc37
SHA512

502400a4e874a103c7c5c30c9dff419e3ebc45496b9b828b5d68c31d488d80e5eb5f042f2c24a07bbf909963350d12c0464fd64e91dbd51f7f214cbc148ae540
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPS1y:b/yC4GyNM01GuQMNXw2PSM

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2488	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1972	6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe
2488	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2488	1972	6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe	28
PID 1972 wrote to memory of 2488	1972	6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe	28
PID 1972 wrote to memory of 2488	1972	6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe	28
PID 1972 wrote to memory of 2488	1972	6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\6a191cb869d0664c37054d6c28da47f7_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
28KB

MD5
f9d465c63f7b99e15b8adf181c7984f1

SHA1
58a70e6e94a0f846f94413cd0ad1d70e27a56a90

SHA256
5617e46cc79ab3131b8fb65c6751b9ccc8298e80446d5ca4119e4dcfccbe6871

SHA512
9cb685a0c7f571020322c4647c35e5ad0388bd7d18a219216e7056d92729a38fa833bd658d80ed21fca75bc03d12e95838d64e9b45766a5b889762b44212c557

Download Submit
C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
28KB

MD5
f9d465c63f7b99e15b8adf181c7984f1

SHA1
58a70e6e94a0f846f94413cd0ad1d70e27a56a90

SHA256
5617e46cc79ab3131b8fb65c6751b9ccc8298e80446d5ca4119e4dcfccbe6871

SHA512
9cb685a0c7f571020322c4647c35e5ad0388bd7d18a219216e7056d92729a38fa833bd658d80ed21fca75bc03d12e95838d64e9b45766a5b889762b44212c557

Download Submit
\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
28KB

MD5
f9d465c63f7b99e15b8adf181c7984f1

SHA1
58a70e6e94a0f846f94413cd0ad1d70e27a56a90

SHA256
5617e46cc79ab3131b8fb65c6751b9ccc8298e80446d5ca4119e4dcfccbe6871

SHA512
9cb685a0c7f571020322c4647c35e5ad0388bd7d18a219216e7056d92729a38fa833bd658d80ed21fca75bc03d12e95838d64e9b45766a5b889762b44212c557

Download Submit
memory/1972-54-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1972-55-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1972-56-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2488-70-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download