a27c459d7602ecd32c291df62955b38f56bcbe9f901124ffa3030babd3444c02

Analysis

max time kernel
134s
max time network
144s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
06/08/2023, 18:56

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General

Target

944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe
Size

98KB
MD5

944b5a181f899fe14c53588b0981520d
SHA1

3f77cadd471c35d6eb04b00cdd2437b393815ff8
SHA256

a27c459d7602ecd32c291df62955b38f56bcbe9f901124ffa3030babd3444c02
SHA512

68e95a9f5d8d8315219df77e350dd9d680b83a352659d3062ff3fefa1c482e5e722d19e7885c0a79bf4fcf8447ea138c81e8eee5ba4d865673bbf077aaa909e7
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GCa:1nK6a+qdOOtEvwDpj/

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2948	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
632	944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/632-54-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/632-70-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012107-69.dat	upx
behavioral1/files/0x0007000000012107-65.dat	upx
behavioral1/memory/2948-71-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012107-79.dat	upx
behavioral1/memory/2948-81-0x0000000000500000-0x000000000050F311-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 632 wrote to memory of 2948	632	944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe	30
PID 632 wrote to memory of 2948	632	944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe	30
PID 632 wrote to memory of 2948	632	944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe	30
PID 632 wrote to memory of 2948	632	944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe	30

C:\Users\Admin\AppData\Local\Temp\944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\944b5a181f899fe14c53588b0981520d_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:632
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2948

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
98KB

MD5
62ac4d6dcb8530b5ea9cad090fabdf96

SHA1
2e6b40303f15328a980f4807a09ef238ed0e4b73

SHA256
b15b4564ae9e358c417edea54c2bc42ae447b66238d815e79e2295c8834c4bb1

SHA512
00194ac587f95670e44d5848d080a01b969ef4a192e84b51b57c1457a58f2e36cf4edef36758cc89cbaca779bf79cfc8e4eab3f30f8413953698ec74b9a37589

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

Filesize
98KB

MD5
62ac4d6dcb8530b5ea9cad090fabdf96

SHA1
2e6b40303f15328a980f4807a09ef238ed0e4b73

SHA256
b15b4564ae9e358c417edea54c2bc42ae447b66238d815e79e2295c8834c4bb1

SHA512
00194ac587f95670e44d5848d080a01b969ef4a192e84b51b57c1457a58f2e36cf4edef36758cc89cbaca779bf79cfc8e4eab3f30f8413953698ec74b9a37589

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

Filesize
98KB

MD5
62ac4d6dcb8530b5ea9cad090fabdf96

SHA1
2e6b40303f15328a980f4807a09ef238ed0e4b73

SHA256
b15b4564ae9e358c417edea54c2bc42ae447b66238d815e79e2295c8834c4bb1

SHA512
00194ac587f95670e44d5848d080a01b969ef4a192e84b51b57c1457a58f2e36cf4edef36758cc89cbaca779bf79cfc8e4eab3f30f8413953698ec74b9a37589

Download Submit
memory/632-54-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/632-55-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/632-56-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/632-57-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/632-67-0x0000000001DE0000-0x0000000001DF0000-memory.dmp

Filesize
64KB

Download
memory/632-70-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/632-80-0x0000000001DE0000-0x0000000001DF0000-memory.dmp

Filesize
64KB

Download
memory/2948-71-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2948-81-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download