modiloader | f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851

Analysis

max time kernel
119s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 03:10

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General

Target

f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
Size

90KB
MD5

fc5d916afc8d4de8920ac4411a57f436
SHA1

27ddd6242e143d3724817cfd6ee2615222b3bcd8
SHA256

f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851
SHA512

6556de6b26a3c65c48a99e25a87fcd40229d9fe8ff2e94e5136dba90ec66c2ee6b0d551876b45029f7a434ad319b72c5b4930282dc34871676d6e5ed76ff1323
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3n

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/944-260-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1240	csrsll.exe
1136	csrsll.exe
944	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.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-1-5-21-3290804112-2823094203-3137964600-1000\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 2372 set thread context of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 1240 set thread context of 1136	1240	csrsll.exe	36
PID 1240 set thread context of 944	1240	csrsll.exe	37

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2372-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2372-83-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2372-92-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2372-82-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-108-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2372-110-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2736-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2372-103-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2736-97-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2736-95-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2372-79-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2372-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/files/0x000a000000016dc8-137.dat	upx
behavioral1/memory/2736-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1240-211-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/944-246-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1240-250-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1136-257-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/944-260-0x0000000000400000-0x0000000000414000-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	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	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe
Token: SeDebugPrivilege	1136	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
1240	csrsll.exe
1136	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2372 wrote to memory of 2736	2372	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	31
PID 2736 wrote to memory of 1732	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	32
PID 2736 wrote to memory of 1732	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	32
PID 2736 wrote to memory of 1732	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	32
PID 2736 wrote to memory of 1732	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	32
PID 1732 wrote to memory of 2380	1732	cmd.exe	34
PID 1732 wrote to memory of 2380	1732	cmd.exe	34
PID 1732 wrote to memory of 2380	1732	cmd.exe	34
PID 1732 wrote to memory of 2380	1732	cmd.exe	34
PID 2736 wrote to memory of 1240	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	35
PID 2736 wrote to memory of 1240	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	35
PID 2736 wrote to memory of 1240	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	35
PID 2736 wrote to memory of 1240	2736	f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe	35
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 1136	1240	csrsll.exe	36
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37
PID 1240 wrote to memory of 944	1240	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
"C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe
  "C:\Users\Admin\AppData\Local\Temp\f82ff8424132e4de83e8f960af6e55eee8937beb48be764fd81e89ffc2ab0851.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\YKSKT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1732
  - - 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:2380
- - 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:1240
  - - 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:1136
  - - 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:944

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\YKSKT.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
d2dcb8c781bbcade7aa62e29508c8873

SHA1
c5fc82536e3bea15ae8218e000e0a92982b02918

SHA256
556a01dd6fae8bb0be722181db47e6d4369212fa0e05c4f7ac3eb7789e285b5e

SHA512
f8d41031e3982d9ab06b4252e4399d5199bd41f753758aeab5a6e392aa56c6eecad9fe957682854fce09033a5fe5e3b60fc6bbbbe78414ed0ee02735460558d1

Download Submit
memory/944-260-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/944-246-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1136-257-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1240-250-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1240-166-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/1240-211-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1240-177-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/1240-156-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2372-110-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-80-0x00000000003D0000-0x00000000003D2000-memory.dmp

Filesize
8KB

Download
memory/2372-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2372-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2372-103-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-16-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2372-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2372-83-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-107-0x0000000001E50000-0x0000000001EA3000-memory.dmp

Filesize
332KB

Download
memory/2372-82-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-71-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2372-61-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/2372-41-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2372-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-28-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2372-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2372-92-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-149-0x00000000025E0000-0x0000000002633000-memory.dmp

Filesize
332KB

Download
memory/2736-108-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-97-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-242-0x00000000025E0000-0x0000000002633000-memory.dmp

Filesize
332KB

Download
memory/2736-99-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2736-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads