ec95a562c9000808f82ec4b93d3aee40ce1f30dc74d8f28b6bfbd801301b7c06

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2024, 23:54

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General

Target

2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe
Size

39KB
MD5

b5ea1df9ac47e25fa837e56be0cdf577
SHA1

6811bedb0dc808e0fb255b338bd1a2c3d5123973
SHA256

ec95a562c9000808f82ec4b93d3aee40ce1f30dc74d8f28b6bfbd801301b7c06
SHA512

7fc93eb994eba297e5bcf4bffdd6365d8fe01569142521651371d98cb499281ea5b133b910ab445bc20bdcddf1f5dd6b6017e2e1fc34e0d61ba61c41eaa352b6
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITi:qDdFJy3QMOtEvwDpjjWMl7Ti

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3844	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4664-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000900000002362a-13.dat	upx
behavioral2/memory/4664-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3844-27-0x0000000000500000-0x0000000000510000-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	2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 3844	4664	2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe	91
PID 4664 wrote to memory of 3844	4664	2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe	91
PID 4664 wrote to memory of 3844	4664	2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-02_b5ea1df9ac47e25fa837e56be0cdf577_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4664
- 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:3844

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4128,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4076 /prefetch:8
1⤵
PID:876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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

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

Filesize
39KB

MD5
f6ef1d5202e8ff7f8eb48761fa0fec43

SHA1
8bbb1b98432d94579c5365e8ffe0f21729663234

SHA256
a7f498a2da13b4b3b60c470fa2e1d04c73d1dd3f88ddbfd4f3824737e8068d73

SHA512
53a1659eb0b7b9f147476a45c43a7b4344933614347c745489be4844c28fadceb946013438c498b790f19c3079f61e6f55a5cefc6bc89c54e750924a41202048

Download Submit
memory/3844-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3844-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3844-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4664-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4664-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4664-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4664-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4664-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download