c41899315b2f3dad512ed1f58746e59fdb2f9717badcf7b2c861c1248d945991

Analysis

max time kernel
600s
max time network
360s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/11/2024, 03:20

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General

Target

calc.exe
Size

161KB
MD5

df543c8c85a47c41886f644f4ecf66ff
SHA1

460154b09e361829c46efcbd64848bfd1db43f53
SHA256

ef00fed6e97e926bdb3b968030795ef5dd34e8e40dec2b7cf802de97feed6321
SHA512

2a43d36b8db163de66c48d3e1db318d4ffc4aa52f2bb5e3b5074cd597cedd18be5f01b07d1afe7cb53af54c54d4e3e32e0bd0c27d2f8698459c1214b5ebfc17d
SSDEEP

3072:g4eqa10YgyW9nnrS8zut754EmUQqWKcm+cqAdZuRqoDb1Ndgjx9MApVfqF8CHJq:A5WFrbzSeE6qWK+yHuR/DfCt9vpAFrp

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2388	bi2qdrxg.exe

Loads dropped DLL 1 IoCs

pid	Process
2120	calc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\bi2qdrxg.exe = "C:\\Users\\Admin\\AppData\\Roaming\\bi2qdrxg.exe"	calc.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral4/memory/2120-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral4/files/0x00050000000194e2-5.dat	upx
behavioral4/memory/2388-12-0x0000000000400000-0x0000000000437000-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	bi2qdrxg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\Main	bi2qdrxg.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	bi2qdrxg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	bi2qdrxg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2388	bi2qdrxg.exe
2388	bi2qdrxg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2388	2120	calc.exe	30
PID 2120 wrote to memory of 2388	2120	calc.exe	30
PID 2120 wrote to memory of 2388	2120	calc.exe	30
PID 2120 wrote to memory of 2388	2120	calc.exe	30

C:\Users\Admin\AppData\Local\Temp\calc.exe
"C:\Users\Admin\AppData\Local\Temp\calc.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Roaming\bi2qdrxg.exe
  "C:\Users\Admin\AppData\Roaming\bi2qdrxg.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Roaming\k00s5clnrvn1r1ij.dat

Filesize
8B

MD5
0d5839bbd99f6f2693c02ec6269b6c72

SHA1
3e1dd0cfd5dcde1ec4d2fb3ac036fdc4e310000e

SHA256
e0e549405e283cca70d4b2a8a069afe3d76987798939c8340724f5c161edc811

SHA512
e10c504c0f9b86fdc148cb252a0c2f6ec002abf0bea4a9fc54bd42bdfdedf8ab45b3a62a03d73e6f9f407c064cb5f177895488dbab9e4b3ab426e19751060138

Download Submit
\Users\Admin\AppData\Roaming\bi2qdrxg.exe

Filesize
161KB

MD5
df543c8c85a47c41886f644f4ecf66ff

SHA1
460154b09e361829c46efcbd64848bfd1db43f53

SHA256
ef00fed6e97e926bdb3b968030795ef5dd34e8e40dec2b7cf802de97feed6321

SHA512
2a43d36b8db163de66c48d3e1db318d4ffc4aa52f2bb5e3b5074cd597cedd18be5f01b07d1afe7cb53af54c54d4e3e32e0bd0c27d2f8698459c1214b5ebfc17d

Download Submit
memory/2120-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2120-1-0x0000000000020000-0x0000000000034000-memory.dmp

Filesize
80KB

Download
memory/2120-2-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2120-9-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2120-11-0x0000000000290000-0x00000000002C7000-memory.dmp

Filesize
220KB

Download
memory/2388-12-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2388-23-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download