modiloader | f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 05:51

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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 1 IoCs

resource	yara_rule
behavioral1/memory/1980-258-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
736	csrsll.exe
1372	csrsll.exe
1980	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.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-1-5-21-3063565911-2056067323-3330884624-1000\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 2036 set thread context of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 736 set thread context of 1372	736	csrsll.exe	36
PID 736 set thread context of 1980	736	csrsll.exe	37

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2036-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2036-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2036-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2508-93-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2508-95-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2508-99-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2508-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2508-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2508-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2036-104-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2508-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2508-134-0x00000000035C0000-0x0000000003613000-memory.dmp	upx
behavioral1/files/0x0005000000004ed7-132.dat	upx
behavioral1/memory/736-150-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2508-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1980-246-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/736-251-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2508-255-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/736-245-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1980-258-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1372-261-0x0000000000400000-0x000000000040B000-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	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
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe
Token: SeDebugPrivilege	1372	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
736	csrsll.exe
1372	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2036 wrote to memory of 2508	2036	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	31
PID 2508 wrote to memory of 1300	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	32
PID 2508 wrote to memory of 1300	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	32
PID 2508 wrote to memory of 1300	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	32
PID 2508 wrote to memory of 1300	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	32
PID 1300 wrote to memory of 1444	1300	cmd.exe	34
PID 1300 wrote to memory of 1444	1300	cmd.exe	34
PID 1300 wrote to memory of 1444	1300	cmd.exe	34
PID 1300 wrote to memory of 1444	1300	cmd.exe	34
PID 2508 wrote to memory of 736	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	35
PID 2508 wrote to memory of 736	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	35
PID 2508 wrote to memory of 736	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	35
PID 2508 wrote to memory of 736	2508	f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe	35
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1372	736	csrsll.exe	36
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37
PID 736 wrote to memory of 1980	736	csrsll.exe	37

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:2036
- C:\Users\Admin\AppData\Local\Temp\f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe
  "C:\Users\Admin\AppData\Local\Temp\f6eb91b7fff2ff24be0f3c16207d1d01d461510fb2df5c4e76674c37d53b3e03.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\BGVUI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1300
  - - 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:1444
- - 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:736
  - - 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:1372
  - - 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:1980

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
5174587af5bfc4c28b97a9d4421a2e2e

SHA1
66c37b7852641e87fa4bc72cb7d3acbd6415f808

SHA256
fe384ac2b981c5dbc3b141172e70e3c3eb99e73893e206f72f4f66288e4c5243

SHA512
2ed97ee387e6117325af16b1fcb422973ed24436aa779a45be3bc1e3db6b128e0072050a851af963dd8ee45060cf92a8993f6a1c06253bbe3ffd4c8ecb35995c

Download Submit
memory/736-166-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/736-245-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/736-251-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/736-177-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/736-156-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/736-150-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1372-261-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1980-258-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1980-246-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2036-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2036-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2036-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2036-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2036-14-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2036-16-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2036-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2036-61-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2036-41-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/2036-29-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2036-104-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2036-71-0x0000000000600000-0x0000000000601000-memory.dmp

Filesize
4KB

Download
memory/2036-90-0x0000000002750000-0x00000000027A3000-memory.dmp

Filesize
332KB

Download
memory/2036-80-0x0000000002460000-0x0000000002462000-memory.dmp

Filesize
8KB

Download
memory/2508-148-0x00000000035C0000-0x0000000003613000-memory.dmp

Filesize
332KB

Download
memory/2508-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-147-0x00000000035C0000-0x0000000003613000-memory.dmp

Filesize
332KB

Download
memory/2508-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-134-0x00000000035C0000-0x0000000003613000-memory.dmp

Filesize
332KB

Download
memory/2508-249-0x00000000035C0000-0x0000000003613000-memory.dmp

Filesize
332KB

Download
memory/2508-252-0x00000000035C0000-0x0000000003613000-memory.dmp

Filesize
332KB

Download
memory/2508-99-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-255-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2508-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2508-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads