4fa494a3f2eea1eeb628d311a5e472e04e93921cc394a7d4e5788190b19757d6

Analysis

max time kernel
145s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/09/2024, 01:03

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General

Target

2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe
Size

72KB
MD5

02b3931458a47486fa264120677db3d0
SHA1

495723f3ab42240a5c6e646d3bde17b902de8b33
SHA256

4fa494a3f2eea1eeb628d311a5e472e04e93921cc394a7d4e5788190b19757d6
SHA512

149ffea4c698536acfa381d084e8b2626cca5c6cf2da0705d5a8929f868c71ffc52178104e152d6a05e30d56828a349ba164242c95d4f0dcadcde2b7cb5bcd9e
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95J:C4Q2c94OtEvwDpj4H8zi

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1764	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1352	2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1352-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012117-15.dat	upx
behavioral1/memory/1764-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1764-26-0x0000000000500000-0x0000000000510000-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	2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 1764	1352	2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe	30
PID 1352 wrote to memory of 1764	1352	2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe	30
PID 1352 wrote to memory of 1764	1352	2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe	30
PID 1352 wrote to memory of 1764	1352	2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1352
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1764

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
72KB

MD5
0bfea1ecaf32c56783f02690cb5850d9

SHA1
9e635b622f4b56532ba06a03474d4a1da2e11f46

SHA256
d3af7162d27406b1a08da67d0492222bbcd71b607625116b9470e8d58d03aae5

SHA512
9f69c5f03ceda959dfe5230b5d15d63df2be52860b7a3cad9aedc986d2c653ffa46076b7f2c5d192162b9f19fd1ba4f6aaee1660475beb905c367483ffa8ba62

Download Submit
memory/1352-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1352-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1352-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1352-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1764-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1764-18-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1764-19-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1764-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download