0d26bf14a3c6c0bd59305cb2d3ca95d876af32b4f6e4b779325c4f64f9259809

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-10-2024 00:29

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General

Target

2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe
Size

45KB
MD5

0fecd1c925414a65521273d57482765d
SHA1

35dfadbc813bd98d3871ecfe1eced93feb1ed140
SHA256

0d26bf14a3c6c0bd59305cb2d3ca95d876af32b4f6e4b779325c4f64f9259809
SHA512

1e7c25a4665b1671d83e16d954ccdac92092b089d1b820c2d458ec7bad5bdb4c34e65041d91793f80913fb726858c5d1602dae7dea60349d5bfee1dd8a92a373
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqvE:bODOw9acifH+Y8

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2840	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2280-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x0007000000012118-11.dat	upx
behavioral1/memory/2280-14-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2840-25-0x0000000008000000-0x000000000800F000-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	2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2840	2280	2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe	31
PID 2280 wrote to memory of 2840	2280	2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe	31
PID 2280 wrote to memory of 2840	2280	2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe	31
PID 2280 wrote to memory of 2840	2280	2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-03_0fecd1c925414a65521273d57482765d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- 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:2840

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\lossy.exe

Filesize
46KB

MD5
b55bd1d05329ba6c96823b55b85e3f34

SHA1
86e51acfca0a4302eb2f59bcef89cd375b9842c8

SHA256
c7e6a86f04bf9fd11a3c30d972f7ccadd11dd2641224fb0535db6c839f41d561

SHA512
66878eb776e95874d20be232a1675f39b9cc5e3f94e5343b917c4448a2460f4f38b9bb344523e409c13eceb08e4028b2949b44928f7088ceb00b37a75f59e710

Download Submit
memory/2280-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2280-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2280-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2280-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2280-14-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2840-17-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2840-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2840-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download