b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43fa

General

Target

b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe
Size

2.0MB
MD5

adc73376517bca5de504eaaafb438530
SHA1

28a2635125d80b9739ed8d35658cf089ab5f6b30
SHA256

b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43fa
SHA512

c243c25aad8417132aecad0277d371f1b8e19dcb5b90dbd3fde8a415697fca9f97e75812bd6dc83fa0d1e764fa0dbd0389201aea0f3237356e9edbdff271ec93
SSDEEP

49152:OFUcx88PWPOpX0SFmDCuF6RkEDob+/DWuizp5ToFQqAyfyGc:O+K88uPCHkD5F6R9obeCuc7caqAWyGc

Score

7^/10

discovery

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	9654.tmp

Executes dropped EXE 1 IoCs

pid	Process
2940	9654.tmp

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	b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9654.tmp

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings	9654.tmp

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3696	WINWORD.EXE
3696	WINWORD.EXE

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2940	9654.tmp

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
3696	WINWORD.EXE
3696	WINWORD.EXE
3696	WINWORD.EXE
3696	WINWORD.EXE
3696	WINWORD.EXE
3696	WINWORD.EXE
3696	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 2940	956	b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe	82
PID 956 wrote to memory of 2940	956	b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe	82
PID 956 wrote to memory of 2940	956	b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe	82
PID 2940 wrote to memory of 3696	2940	9654.tmp	85
PID 2940 wrote to memory of 3696	2940	9654.tmp	85

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe
"C:\Users\Admin\AppData\Local\Temp\b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\9654.tmp
  "C:\Users\Admin\AppData\Local\Temp\9654.tmp" --splashC:\Users\Admin\AppData\Local\Temp\b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.exe 402A28585FAB473DB7CCD1EB6A8A021E0DD59CC2EAED1A9C7A2A83F939C0A308194FF72DB5442834A673CC8094A1BA2CB5615DD638393B6F02B43230392954E9
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.docx" /o ""
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    PID:3696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\9654.tmp

Filesize
2.0MB

MD5
42ba1e232b379c089736b4c97f852e33

SHA1
4e1a60c360025b74ca11e7682ca4d281437dd825

SHA256
6a4706f9e79d1e9ae810e55a4f9adb874eeb84ede89cb8ccd4f35836b67d66e9

SHA512
f5eafc0b48ef47fae2bb14771930f25d4171f288cd887483beb27dc4e374560280a0eb66d55df311e1deda2848e4698351dc4410cc58cf1dade587da03ce38e9

Download Submit
C:\Users\Admin\AppData\Local\Temp\b4b1374c542b939bc413963d924437a12db022ad5f77c51cec52290fcd6a43faN.docx

Filesize
19KB

MD5
4046ff080673cffac6529512b8d3bdbb

SHA1
d3cbc39065b7a55e995fa25397da2140bdac80c1

SHA256
f0c1b360c0b24b5450a79138650e6ee254afae6ce8f6c68da7d1f32f91582680

SHA512
453f70730b7560e3d3e23ddfa0fe74e014753f8b34b45254c1c0cf5fec0546a2b8b109a4f9d096e91711b6d02cb383a7136c2cb7bd6600d0598acf7c90c25418

Download Submit
memory/956-0-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2940-5-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/3696-18-0x00007FFDBDC10000-0x00007FFDBDC20000-memory.dmp

Filesize
64KB

Download
memory/3696-20-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-16-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-17-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-13-0x00007FFDBDC10000-0x00007FFDBDC20000-memory.dmp

Filesize
64KB

Download
memory/3696-11-0x00007FFDBDC10000-0x00007FFDBDC20000-memory.dmp

Filesize
64KB

Download
memory/3696-14-0x00007FFDFDC2D000-0x00007FFDFDC2E000-memory.dmp

Filesize
4KB

Download
memory/3696-19-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-12-0x00007FFDBDC10000-0x00007FFDBDC20000-memory.dmp

Filesize
64KB

Download
memory/3696-21-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-22-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-15-0x00007FFDBDC10000-0x00007FFDBDC20000-memory.dmp

Filesize
64KB

Download
memory/3696-23-0x00007FFDBB9F0000-0x00007FFDBBA00000-memory.dmp

Filesize
64KB

Download
memory/3696-26-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-25-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-24-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-29-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-30-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-28-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download
memory/3696-27-0x00007FFDBB9F0000-0x00007FFDBBA00000-memory.dmp

Filesize
64KB

Download
memory/3696-43-0x00007FFDFDB90000-0x00007FFDFDD85000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads