26b3f60175698b4c8c404a0761621397ba17580c940bd9034b3dd792dfc3d027

Analysis

max time kernel
143s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
19/08/2023, 15:10

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General

Target

4726a4bf2d4cae0e6d780c18f983be87_cryptolocker_JC.exe
Size

86KB
MD5

4726a4bf2d4cae0e6d780c18f983be87
SHA1

e18c5b78675966e8d311f18ffb26fe684ed02e3c
SHA256

26b3f60175698b4c8c404a0761621397ba17580c940bd9034b3dd792dfc3d027
SHA512

36012be274464bd33615464c5073c21f0c526f92baf0f81fe56747b1f96e1cb1274409e7c6d430118c770a3d9941fb4fc10192f37b8ddbeb396f81acfabfc533
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNuRWGb:AnBdOOtEvwDpj6zg1

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4908	asih.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/836-133-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00080000000231c2-146.dat	upx
behavioral2/files/0x00080000000231c2-148.dat	upx
behavioral2/files/0x00080000000231c2-149.dat	upx
behavioral2/memory/836-150-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4908-159-0x0000000000500000-0x000000000050F000-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 3 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 4908	836	4726a4bf2d4cae0e6d780c18f983be87_cryptolocker_JC.exe	82
PID 836 wrote to memory of 4908	836	4726a4bf2d4cae0e6d780c18f983be87_cryptolocker_JC.exe	82
PID 836 wrote to memory of 4908	836	4726a4bf2d4cae0e6d780c18f983be87_cryptolocker_JC.exe	82

C:\Users\Admin\AppData\Local\Temp\4726a4bf2d4cae0e6d780c18f983be87_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\4726a4bf2d4cae0e6d780c18f983be87_cryptolocker_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4908

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
87KB

MD5
5e98ad7225972c375ace0b4f12f6250d

SHA1
51ea261ce422176c1f39cd6ad284a25c80f8ce81

SHA256
3bfeba4c2a4045b9da360fca6ccdabc13ca5c9a38a19b62e2171297b42949f05

SHA512
a963135707c32ff0136d3e1ece1f7ddda9d9ae8c0a53f8b1de38dc975cacac1e0618d5512e9e0b039a46ab91db16d6de9a8a19236b8b6ddb97e31e1d094216e3

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

Filesize
87KB

MD5
5e98ad7225972c375ace0b4f12f6250d

SHA1
51ea261ce422176c1f39cd6ad284a25c80f8ce81

SHA256
3bfeba4c2a4045b9da360fca6ccdabc13ca5c9a38a19b62e2171297b42949f05

SHA512
a963135707c32ff0136d3e1ece1f7ddda9d9ae8c0a53f8b1de38dc975cacac1e0618d5512e9e0b039a46ab91db16d6de9a8a19236b8b6ddb97e31e1d094216e3

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

Filesize
87KB

MD5
5e98ad7225972c375ace0b4f12f6250d

SHA1
51ea261ce422176c1f39cd6ad284a25c80f8ce81

SHA256
3bfeba4c2a4045b9da360fca6ccdabc13ca5c9a38a19b62e2171297b42949f05

SHA512
a963135707c32ff0136d3e1ece1f7ddda9d9ae8c0a53f8b1de38dc975cacac1e0618d5512e9e0b039a46ab91db16d6de9a8a19236b8b6ddb97e31e1d094216e3

Download Submit
memory/836-133-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/836-134-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/836-135-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/836-136-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/836-150-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4908-153-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4908-152-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4908-159-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download