modiloader | eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 07:28

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General

Target

eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe
Size

90KB
MD5

2ca4dcb4270982ee33c10efc8e6a5dee
SHA1

a3c65c6c4f6097bfb9ad527e9497e77d0285eff4
SHA256

eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9
SHA512

43577655e88c9cc199da718bb6bdba5837fff223283a0367349e691b389520cba93ee0d5978beabec82648743aad16e011fc0f4c0421522d1c1258e59283d016
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDv:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE39

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/4228-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4228-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4228-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4228-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe

Executes dropped EXE 3 IoCs

pid	Process
336	csrsll.exe
3920	csrsll.exe
4228	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-1-5-21-4089630652-1596403869-279772308-1000\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 2108 set thread context of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 336 set thread context of 3920	336	csrsll.exe	95
PID 336 set thread context of 4228	336	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2108-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2108-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2660-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2660-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2108-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2660-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cab-29.dat	upx
behavioral2/memory/2660-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/336-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/336-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4228-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4228-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4228-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4228-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4228-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/336-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2660-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3920-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4228-62-0x0000000000400000-0x0000000000414000-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	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe
Token: SeDebugPrivilege	3920	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe
2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe
336	csrsll.exe
3920	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2108 wrote to memory of 2660	2108	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	84
PID 2660 wrote to memory of 2676	2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	87
PID 2660 wrote to memory of 2676	2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	87
PID 2660 wrote to memory of 2676	2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	87
PID 2676 wrote to memory of 1176	2676	cmd.exe	90
PID 2676 wrote to memory of 1176	2676	cmd.exe	90
PID 2676 wrote to memory of 1176	2676	cmd.exe	90
PID 2660 wrote to memory of 336	2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	91
PID 2660 wrote to memory of 336	2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	91
PID 2660 wrote to memory of 336	2660	eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe	91
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 3920	336	csrsll.exe	95
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96
PID 336 wrote to memory of 4228	336	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe
"C:\Users\Admin\AppData\Local\Temp\eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe
  "C:\Users\Admin\AppData\Local\Temp\eb99ebb89f4dff3a1f417e9deb80fb6d3dca752037b0534033e981bfb27d4ff9.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2660
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KOJRF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - 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:1176
- - 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:336
  - - 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:3920
  - - 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:4228

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\KOJRF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e755055fc7aca6559d66e6b1117b7f2c

SHA1
94962b137e55757a72a6aed8dac8bd1adf3c0008

SHA256
52153962f1f16a53797bbccf8058c67f186d9f2b82145cf95d508d38a6580ecc

SHA512
cecae525970c6c52e710b1d0f2b0d7d64ab7d52b3a5f2641574e0f10f41ac2ae29e7073bcbe9d4bd0daf0134d20bbab094455980f1afc94121c1b8b3ab3596e9

Download Submit
memory/336-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/336-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/336-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2108-3-0x0000000002A00000-0x0000000002A02000-memory.dmp

Filesize
8KB

Download
memory/2108-4-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/2108-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2108-6-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/2108-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2108-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2660-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3920-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4228-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4228-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4228-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4228-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4228-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4228-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads