a82405249847a3fad5b11e6ec6e86f750954cb6eb427e7938c93d5836db7585f

Analysis

max time kernel
140s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/09/2024, 06:26

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General

Target

2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe
Size

89KB
MD5

6250087338adcd611873a5147cf51fa3
SHA1

998bb4080c0b917eef06a8bced79d7ca72481894
SHA256

a82405249847a3fad5b11e6ec6e86f750954cb6eb427e7938c93d5836db7585f
SHA512

f06fa411d0e34429e27294e213df4f4d2920fe5b65890bd6e174c1fb48dbe31478cb15bc7d0a13e9bddcd11e9b432728d394a735d173d2cbc3b3a8c84e38b4b1
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpO:AnBdOOtEvwDpj6zR

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1848	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1320	2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1320-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c00000001227e-11.dat	upx
behavioral1/memory/1320-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1848-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 1848	1320	2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe	31
PID 1320 wrote to memory of 1848	1320	2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe	31
PID 1320 wrote to memory of 1848	1320	2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe	31
PID 1320 wrote to memory of 1848	1320	2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_6250087338adcd611873a5147cf51fa3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
90KB

MD5
96aeccd2aa73490588db51f0bb908f13

SHA1
761be95f476a7c1effcc6751a4c61890f3b5b80b

SHA256
86c7f2998312e3fc56866acbb05a6657c0ba89ceeca1830fc288c85c5f8056dc

SHA512
1305d443d2b16e7babc142c625b879c59f724665a90178fd2f880f68eafbc7a9705882ea01676ca0520ea4b87821a77ced6f96aea2cf6722de0a3000b816eb7e

Download Submit
memory/1320-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1320-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1320-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1320-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1320-13-0x00000000006A0000-0x00000000006AF000-memory.dmp

Filesize
60KB

Download
memory/1320-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1848-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1848-19-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1848-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download