f900c597f470ae22f73ba755d35d9c30583c628ecc0b275788405d0e7b190a0d

Analysis

max time kernel
135s
max time network
145s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
05/08/2023, 20:29

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General

Target

7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe
Size

76KB
MD5

7a5847cd2826a355b99b43ed9eeec7e7
SHA1

dad0f3fc6d7e713934e0f831601467c8c8ac986d
SHA256

f900c597f470ae22f73ba755d35d9c30583c628ecc0b275788405d0e7b190a0d
SHA512

5dcda5869e4ee323c930b818ff4fe69aea03b20137174f684ccfc7a08b18ba075836b96a83fcbdc1d7e338c763f8aea4dd459f9dd94f3d4da2bd16fffd3e19ee
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalDSEQ:1nK6a+qdOOtEvwDpj5

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2236	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2380-53-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012107-64.dat	upx
behavioral1/memory/2380-68-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012107-69.dat	upx
behavioral1/memory/2236-70-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012107-79.dat	upx
behavioral1/memory/2236-81-0x0000000000500000-0x000000000050F311-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2236	2380	7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe	28
PID 2380 wrote to memory of 2236	2380	7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe	28
PID 2380 wrote to memory of 2236	2380	7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe	28
PID 2380 wrote to memory of 2236	2380	7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\7a5847cd2826a355b99b43ed9eeec7e7_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2236

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\asih.exe

Filesize
76KB

MD5
7db74b436a85119696eb2e7ff41fcb4e

SHA1
679c52e980368a1afb3e619c51b2d350c93346c9

SHA256
ec54751b14f5a3ba876e55592e149c3cfb91e13994c96b76fa36809d16b8b4f9

SHA512
d74df524fc6a8c74d2704f58f9f712f4069866e22b3f31e4effccebee3ef2ef260b720d60084c1ea8d6b708d1d1fc253899f11157fc675d40ee33c5f481bdf54

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

Filesize
76KB

MD5
7db74b436a85119696eb2e7ff41fcb4e

SHA1
679c52e980368a1afb3e619c51b2d350c93346c9

SHA256
ec54751b14f5a3ba876e55592e149c3cfb91e13994c96b76fa36809d16b8b4f9

SHA512
d74df524fc6a8c74d2704f58f9f712f4069866e22b3f31e4effccebee3ef2ef260b720d60084c1ea8d6b708d1d1fc253899f11157fc675d40ee33c5f481bdf54

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

Filesize
76KB

MD5
7db74b436a85119696eb2e7ff41fcb4e

SHA1
679c52e980368a1afb3e619c51b2d350c93346c9

SHA256
ec54751b14f5a3ba876e55592e149c3cfb91e13994c96b76fa36809d16b8b4f9

SHA512
d74df524fc6a8c74d2704f58f9f712f4069866e22b3f31e4effccebee3ef2ef260b720d60084c1ea8d6b708d1d1fc253899f11157fc675d40ee33c5f481bdf54

Download Submit
memory/2236-81-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2236-72-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2236-73-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2236-70-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2380-55-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2380-68-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2380-67-0x00000000020A0000-0x00000000020B0000-memory.dmp

Filesize
64KB

Download
memory/2380-53-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2380-56-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2380-80-0x00000000020A0000-0x00000000020B0000-memory.dmp

Filesize
64KB

Download
memory/2380-54-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download