f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9

Analysis

max time kernel
94s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2024 05:13

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General

Target

f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe
Size

65KB
MD5

54e66221e44a9d2d212b5d8a23868a3f
SHA1

f4e3306310f965f7a9172aef401d1067c5a276f0
SHA256

f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9
SHA512

270f5500aa0e8bac87489fa6d4083234ea7f9f3e6065f526b999534a6dbd5419cb61b094b56163a8ce2913ca0a3f6cecf4011dfce6ae9b2abb124398f5688367
SSDEEP

768:r8eRH+MlFh0pDpuJ84WEi+U6sh7iQroCHmyf+RjFBSuB2Xpfs14fu5:r9l+W8xFt6sh7iQroCoRB0u0sefG

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe

Executes dropped EXE 1 IoCs

pid	Process
400	bkgrnd.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2316-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/files/0x000c000000023b2d-7.dat	upx
behavioral2/memory/2316-11-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/memory/400-26-0x0000000000400000-0x000000000040F000-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	f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bkgrnd.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 400	2316	f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe	82
PID 2316 wrote to memory of 400	2316	f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe	82
PID 2316 wrote to memory of 400	2316	f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe	82

C:\Users\Admin\AppData\Local\Temp\f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe
"C:\Users\Admin\AppData\Local\Temp\f58c0f41112399380d872030fb6cbc7d9d2c9e57f99fbc6b229c39a92535a0f9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\bkgrnd.exe
  "C:\Users\Admin\AppData\Local\Temp\bkgrnd.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:400

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

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Downloads

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

Filesize
65KB

MD5
8a722622d45302dd54d722d1a8a0d761

SHA1
b6c6ea89aefee0fe7c27582c3161d5b6eff2524f

SHA256
3ae052400491615d9ce992699da5543fba2855d16127df8f30afb066d0b6a9ca

SHA512
d386567eca4a0cb03063fb8c02572cd85845baddae540d70118e66049d636e20ed2ecf190dcba434bc472ec934a96d823a0fd483394942794c8aabeb65c69368

Download Submit
memory/400-26-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2316-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2316-1-0x0000000004000000-0x0000000004006000-memory.dmp

Filesize
24KB

Download
memory/2316-2-0x0000000004000000-0x0000000004006000-memory.dmp

Filesize
24KB

Download
memory/2316-11-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download