modiloader | bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/12/2024, 01:14

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
Size

90KB
MD5

6f95d6df03c782b20af78ca116751266
SHA1

74048f210a4664c9bb5fda2310f62799c5d2fbdf
SHA256

bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5
SHA512

4ed531c5a1a2d7655118420d58f8cd004b3ed41b8fc7f029b174abd00c73f347b9a60cb49662f91a70aa0df0ed4a8f923aff2dc6f800bf8c4798d060d03bff11
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDN:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE37

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral1/memory/1704-263-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1764	csrsll.exe
3060	csrsll.exe
1704	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 1764 set thread context of 3060	1764	csrsll.exe	35
PID 1764 set thread context of 1704	1764	csrsll.exe	36

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2888-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2888-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2888-90-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2888-81-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1532-95-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1532-93-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1532-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1532-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1532-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2888-103-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1532-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x000c0000000120f6-132.dat	upx
behavioral1/memory/1532-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1764-213-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1704-251-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1764-253-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1532-257-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/3060-260-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1704-263-0x0000000000400000-0x0000000000414000-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 7 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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
1764	csrsll.exe
3060	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 2888 wrote to memory of 1532	2888	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	30
PID 1532 wrote to memory of 2872	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	31
PID 1532 wrote to memory of 2872	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	31
PID 1532 wrote to memory of 2872	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	31
PID 1532 wrote to memory of 2872	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	31
PID 2872 wrote to memory of 2004	2872	cmd.exe	33
PID 2872 wrote to memory of 2004	2872	cmd.exe	33
PID 2872 wrote to memory of 2004	2872	cmd.exe	33
PID 2872 wrote to memory of 2004	2872	cmd.exe	33
PID 1532 wrote to memory of 1764	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	34
PID 1532 wrote to memory of 1764	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	34
PID 1532 wrote to memory of 1764	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	34
PID 1532 wrote to memory of 1764	1532	bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe	34
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 3060	1764	csrsll.exe	35
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36
PID 1764 wrote to memory of 1704	1764	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
"C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe
  "C:\Users\Admin\AppData\Local\Temp\bff33c010d44e33da79a9dfd7e401528ba39f18f95eb68c84358634363ccb6e5.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\TCOSP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2872
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2004
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1764
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3060
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1704

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\TCOSP.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
ae9605e075f488c10330f65a0e1938a6

SHA1
b3936a12a56cbdfdb7e8c153d097c84dcbd3d9ca

SHA256
f956a9a1f6ca59683068009c2f54f3ae896bd174f4def12cafb09eb1ca85b081

SHA512
59c593864ffb96841e9644d6cb73fc66928154ef11907d827a15f9c1ddc9229f6eb4f68432187f5e596803df9cc5edf628a58e69cc736c4478d589f21da26195

Download Submit
memory/1532-149-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-98-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1532-243-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-146-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-147-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-245-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-240-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-242-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-148-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/1532-257-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1532-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1704-251-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1704-263-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1764-156-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1764-166-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1764-213-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1764-177-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1764-253-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-29-0x0000000001B80000-0x0000000001B81000-memory.dmp

Filesize
4KB

Download
memory/2888-71-0x0000000001C40000-0x0000000001C41000-memory.dmp

Filesize
4KB

Download
memory/2888-97-0x0000000002560000-0x00000000025B3000-memory.dmp

Filesize
332KB

Download
memory/2888-81-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-90-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-41-0x0000000001BA0000-0x0000000001BA1000-memory.dmp

Filesize
4KB

Download
memory/2888-103-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-79-0x0000000001C60000-0x0000000001C62000-memory.dmp

Filesize
8KB

Download
memory/2888-61-0x0000000001BE0000-0x0000000001BE1000-memory.dmp

Filesize
4KB

Download
memory/2888-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-20-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2888-15-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2888-3-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/2888-5-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/3060-260-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads