84c628adba7d09e7621579a147e6d2daa189dd4f47a86e6095d05cd696fcd570

Analysis

max time kernel
121s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/06/2024, 15:18

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General

Target

Bandicam/bdcam_setup.bat
Size

61KB
MD5

04c9207727dc5474f2deb587e591881b
SHA1

c7217d5a6992ed4b258cfe4e0689b15e37077d0f
SHA256

b9fec10884cff054689605514294b72870bebf085eebedfd8555123127688272
SHA512

44827e60c68a8dc572f9fe1e35a1a32cd56a5fbcfd8d85344c309daf60ef233995a2353e776e648706430f60ac4eeddb53a40cd13ad53f28e4ac23d6d0df87cd
SSDEEP

1536:7Ysjgm7LaXhXOXn3IXsz/oeQWewbUZHDjY9:7EXheZz/oel2ZHHc

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2668	bdcam_activate.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
1188	bdcam.exe
1188	bdcam.exe
2264	bdcam.exe
2264	bdcam.exe

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.bfix	bdcam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.bfix\ = "BANDICAM.bfix"	bdcam.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\DefaultIcon	bdcam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Bandicam\\bdfix.exe"	bdcam.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\Shell	bdcam.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\Shell\Open	bdcam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\Shell\Open\Command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Bandicam\\bdfix.exe\"\"%1\""	bdcam.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix	bdcam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\ = "BandiFix Recovery File"	bdcam.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\BANDICAM.bfix\Shell\Open\Command	bdcam.exe

Runs net.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2668	bdcam_activate.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1188	bdcam.exe
2264	bdcam.exe
2264	bdcam.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	2264	bdcam.exe
Token: SeIncBasePriorityPrivilege	2264	bdcam.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2264	bdcam.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2264	bdcam.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1188	bdcam.exe
2264	bdcam.exe
2264	bdcam.exe
2264	bdcam.exe
2264	bdcam.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 552	2104	cmd.exe	29
PID 2104 wrote to memory of 552	2104	cmd.exe	29
PID 2104 wrote to memory of 552	2104	cmd.exe	29
PID 552 wrote to memory of 1160	552	net.exe	30
PID 552 wrote to memory of 1160	552	net.exe	30
PID 552 wrote to memory of 1160	552	net.exe	30
PID 2104 wrote to memory of 1188	2104	cmd.exe	31
PID 2104 wrote to memory of 1188	2104	cmd.exe	31
PID 2104 wrote to memory of 1188	2104	cmd.exe	31
PID 1188 wrote to memory of 2568	1188	bdcam.exe	32
PID 1188 wrote to memory of 2568	1188	bdcam.exe	32
PID 1188 wrote to memory of 2568	1188	bdcam.exe	32
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 1188 wrote to memory of 2628	1188	bdcam.exe	33
PID 2104 wrote to memory of 2648	2104	cmd.exe	34
PID 2104 wrote to memory of 2648	2104	cmd.exe	34
PID 2104 wrote to memory of 2648	2104	cmd.exe	34
PID 2104 wrote to memory of 2668	2104	cmd.exe	35
PID 2104 wrote to memory of 2668	2104	cmd.exe	35
PID 2104 wrote to memory of 2668	2104	cmd.exe	35
PID 2104 wrote to memory of 2668	2104	cmd.exe	35
PID 2104 wrote to memory of 2596	2104	cmd.exe	36
PID 2104 wrote to memory of 2596	2104	cmd.exe	36
PID 2104 wrote to memory of 2596	2104	cmd.exe	36
PID 2104 wrote to memory of 2264	2104	cmd.exe	37
PID 2104 wrote to memory of 2264	2104	cmd.exe	37
PID 2104 wrote to memory of 2264	2104	cmd.exe	37

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

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Bandicam\bdcam_setup.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\system32\net.exe
  NET SESSION
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:552
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 SESSION
    3⤵
    PID:1160
- C:\Users\Admin\AppData\Local\Temp\Bandicam\bdcam.exe
  "bdcam.exe" /install
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1188
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Bandicam\bdcamvk64.dll",RegDll
    3⤵
    PID:2568
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Bandicam\bdcamvk32.dll",RegDll
    3⤵
    PID:2628
- C:\Windows\system32\certutil.exe
  certutil -decode C:\Users\Admin\AppData\Local\Temp\Bandicam\bdcam_setup.bat "C:\Users\Admin\AppData\Local\Temp\bdcam_activate.exe"
  2⤵
  PID:2648
- C:\Users\Admin\AppData\Local\Temp\bdcam_activate.exe
  "C:\Users\Admin\AppData\Local\Temp\bdcam_activate.exe" /inst
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  PID:2668
- C:\Windows\system32\reg.exe
  reg copy "HKLM\SOFTWARE\WOW6432Node\BANDISOFT\BANDICAM\OPTION" "HKCU\SOFTWARE\BANDISOFT\BANDICAM\OPTION" /s /f
  2⤵
  PID:2596
- C:\Users\Admin\AppData\Local\Temp\Bandicam\bdcam.exe
  "bdcam.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar41E7.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\bdcam_activate.exe

Filesize
45KB

MD5
360ec335cff3d6f6242b62f96747c6c1

SHA1
60439d9b7689b994b1691db6f2d795697eeafa48

SHA256
20d7107252aac741c68b8a03cc20520430e93acdbe3434ee428d162a85f93a94

SHA512
ee9aa23d4e7600fe2d57350a483125d6e22ee73718d362d061a20b0b096bc874f864328d8be38b5b20768ecca77ea36f8ea5f7a25ad11fca3ba862fe736eeef0

Download Submit
memory/1188-6-0x000000013F720000-0x0000000140482000-memory.dmp

Filesize
13.4MB

Download
memory/1188-0-0x000000013FCDB000-0x0000000140118000-memory.dmp

Filesize
4.2MB

Download
memory/1188-7-0x000000013FCDB000-0x0000000140118000-memory.dmp

Filesize
4.2MB

Download
memory/1188-5-0x0000000077D60000-0x0000000077D62000-memory.dmp

Filesize
8KB

Download
memory/1188-3-0x0000000077D60000-0x0000000077D62000-memory.dmp

Filesize
8KB

Download
memory/1188-1-0x0000000077D60000-0x0000000077D62000-memory.dmp

Filesize
8KB

Download
memory/2264-19-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/2264-18-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/2264-17-0x000000013F3F0000-0x0000000140152000-memory.dmp

Filesize
13.4MB

Download
memory/2264-16-0x0000000077D60000-0x0000000077D62000-memory.dmp

Filesize
8KB

Download
memory/2264-63-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/2264-64-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/2264-65-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/2668-11-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download