modiloader | f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 05:49

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General

Target

f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
Size

90KB
MD5

a505506c114be7c68c8274043a666138
SHA1

528eeba3b00ede5903b4f6267ee1e4de7f83c98a
SHA256

f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03
SHA512

c701fa0ca6a9315a01a9f2efa7e71396f2806c34810d71c5982d92cbd4cad8c8f4aa679995b3131aa520e0719620a3751e8ea11f226d2ca70039a2dfe73509e3
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 4 IoCs

resource	yara_rule
behavioral2/memory/5096-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5096-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5096-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5096-63-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe

Executes dropped EXE 3 IoCs

pid	Process
4152	csrsll.exe
3880	csrsll.exe
5096	csrsll.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-1-5-21-4050598569-1597076380-177084960-1000\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 2404 set thread context of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 4152 set thread context of 3880	4152	csrsll.exe	95
PID 4152 set thread context of 5096	4152	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2404-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2404-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1880-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2404-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c84-29.dat	upx
behavioral2/memory/4152-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4152-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4152-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5096-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5096-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5096-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5096-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5096-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4152-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1880-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3880-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5096-63-0x0000000000400000-0x0000000000414000-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	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.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	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe
Token: SeDebugPrivilege	3880	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
4152	csrsll.exe
3880	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 2404 wrote to memory of 1880	2404	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	87
PID 1880 wrote to memory of 2304	1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	88
PID 1880 wrote to memory of 2304	1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	88
PID 1880 wrote to memory of 2304	1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	88
PID 2304 wrote to memory of 3928	2304	cmd.exe	93
PID 2304 wrote to memory of 3928	2304	cmd.exe	93
PID 2304 wrote to memory of 3928	2304	cmd.exe	93
PID 1880 wrote to memory of 4152	1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	94
PID 1880 wrote to memory of 4152	1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	94
PID 1880 wrote to memory of 4152	1880	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	94
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 3880	4152	csrsll.exe	95
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96
PID 4152 wrote to memory of 5096	4152	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
"C:\Users\Admin\AppData\Local\Temp\f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
  "C:\Users\Admin\AppData\Local\Temp\f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1880
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WCUYT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2304
  - - 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:3928
- - 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:4152
  - - 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:3880
  - - 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:5096

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

Query Registry

T1012

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\Local\Temp\WCUYT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
cbe14859c7e5aa6b821b80df802c7421

SHA1
1d6ef0f8859aaf80b1b238f5a94238cff44a74a5

SHA256
b22dcd3ff819591127f438c73819677674ca5ab71942a32f0b1757847cd2cd77

SHA512
ec3032be26a1b586253b912a6bd48d099480d369f07247ead4dce83efdcf51ec5f72c0f5a6ae8992a03827063199f47be94aee51cee2305dab37907f176e7958

Download Submit
memory/1880-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1880-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1880-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1880-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1880-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2404-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/2404-5-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/2404-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2404-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2404-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2404-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3880-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4152-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4152-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4152-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4152-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5096-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5096-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5096-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5096-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5096-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5096-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads