e2d340308be49667f42f981405b1367e0524c289c4fd8946eded6834d6bdea57

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/09/2024, 16:39

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General

Target

2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe
Size

34KB
MD5

a01db37a74ab4d026c98376e112e2f6a
SHA1

342c98d08aee1b70ec7d1df56bd586bd9507e9f5
SHA256

e2d340308be49667f42f981405b1367e0524c289c4fd8946eded6834d6bdea57
SHA512

443746286f31445b5c6ffab700c4e685aa5b2c14ad88d92c46ac1c434c9c31fe721944cadde2b1f10a6df321f6a6a200834186501fe1e933f5517d65dfdb2d90
SSDEEP

768:bFPm5zusFUB2preAr+Ofjg0S16avdrQFiLjJvtXy:bFPmpiif/oc+vXy

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1136	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
3056	2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3056-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x0007000000012116-16.dat	upx
behavioral1/memory/1136-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/3056-15-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/1136-27-0x0000000008000000-0x000000000800E000-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	lossy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 1136	3056	2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe	30
PID 3056 wrote to memory of 1136	3056	2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe	30
PID 3056 wrote to memory of 1136	3056	2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe	30
PID 3056 wrote to memory of 1136	3056	2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_a01db37a74ab4d026c98376e112e2f6a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1136

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\lossy.exe

Filesize
34KB

MD5
b7068cc3f2ea90cac1f08b48a997e999

SHA1
02ebb2a9892bae73688d27b02970018dd55949c6

SHA256
684a0cf3bc6c7e2a3b4d5f0e799e8507b7570c1ee5ce3ae18c6bf1c3c46b8df3

SHA512
2d38edd0ae9bb948b5580faddfae2fa5ea1e21f22230ab9590997fd1ea423187b0490b452ae3158c4064581bc92eb6589ff1782faa2ea626860ec1c215e1ef1e

Download Submit
memory/1136-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1136-19-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1136-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1136-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3056-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3056-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3056-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3056-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3056-15-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download