126a55ba32b463d54aeee5865efa024d756ab6be5cb13f2e1ec5d31528b4a4f9

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
03/08/2023, 17:26

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General

Target

52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe
Size

77KB
MD5

52519806be1bae869c86acb16bdf843e
SHA1

2e4802ce23d81b6b10bbac2edb4ecd3a39504be2
SHA256

126a55ba32b463d54aeee5865efa024d756ab6be5cb13f2e1ec5d31528b4a4f9
SHA512

fcbacf7c311c5b748e3c77ba1e05a9d647f1022ec68f7f344d2ba11adc5cd4ce8f40d2192eca530c1300caa3309c1a93d7a6e3617c47145b5c972ab49fff0dc2
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalDSwLJD:1nK6a+qdOOtEvwDpjq

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2940	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2556	52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2556-54-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x001000000001201d-65.dat	upx
behavioral1/memory/2940-71-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2556-69-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x001000000001201d-68.dat	upx
behavioral1/files/0x001000000001201d-80.dat	upx
behavioral1/memory/2940-82-0x0000000000500000-0x000000000050F311-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 2556 wrote to memory of 2940	2556	52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe	28
PID 2556 wrote to memory of 2940	2556	52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe	28
PID 2556 wrote to memory of 2940	2556	52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe	28
PID 2556 wrote to memory of 2940	2556	52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\52519806be1bae869c86acb16bdf843e_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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
77KB

MD5
157a84026140aa9f38e68f80b4353f63

SHA1
35e01f701dcdbd6fc70b6fcb8778c2b49e045bd9

SHA256
ae52a98b1a308354f48bb56d1351fb7b31a7a0aa00f52a6cb2a31af7e629da92

SHA512
810811744d59f4b6106285dc1bdbeec93f478960dd841e01ecce8de886046b25e9d366f0be674ead8bab8f2af2f29e26ce8088afec2b9ba0114dc610ddcaceae

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

Filesize
77KB

MD5
157a84026140aa9f38e68f80b4353f63

SHA1
35e01f701dcdbd6fc70b6fcb8778c2b49e045bd9

SHA256
ae52a98b1a308354f48bb56d1351fb7b31a7a0aa00f52a6cb2a31af7e629da92

SHA512
810811744d59f4b6106285dc1bdbeec93f478960dd841e01ecce8de886046b25e9d366f0be674ead8bab8f2af2f29e26ce8088afec2b9ba0114dc610ddcaceae

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

Filesize
77KB

MD5
157a84026140aa9f38e68f80b4353f63

SHA1
35e01f701dcdbd6fc70b6fcb8778c2b49e045bd9

SHA256
ae52a98b1a308354f48bb56d1351fb7b31a7a0aa00f52a6cb2a31af7e629da92

SHA512
810811744d59f4b6106285dc1bdbeec93f478960dd841e01ecce8de886046b25e9d366f0be674ead8bab8f2af2f29e26ce8088afec2b9ba0114dc610ddcaceae

Download Submit
memory/2556-70-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2556-58-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2556-54-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2556-69-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2556-56-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2556-55-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2556-81-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2940-71-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2940-74-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2940-73-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2940-82-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download