modiloader | 50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354

Analysis

max time kernel
120s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 04:16

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General

Target

50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
Size

90KB
MD5

d843ee4f7c656400db469b2f4548ab40
SHA1

91c3fd3b5b2fc97f449fd7c41c875d73a37cd5a7
SHA256

50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354
SHA512

0671deed4a357ad5a2d768be258ae0dd790ea02d674b00c8239dd5867c2d2bfa6af2596d5166245a127e17cc27e9afdd96b499b4bdeaeb043f382f68619f7a46
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDu:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3M

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/3988-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3988-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3988-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3988-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe

Executes dropped EXE 3 IoCs

pid	Process
2252	csrsll.exe
1936	csrsll.exe
3988	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-1-5-21-3350944739-639801879-157714471-1000\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 1188 set thread context of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 2252 set thread context of 1936	2252	csrsll.exe	99
PID 2252 set thread context of 3988	2252	csrsll.exe	100

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1188-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1188-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3972-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3972-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3972-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1188-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0009000000023c50-29.dat	upx
behavioral2/memory/3972-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2252-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2252-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3988-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2252-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3988-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3988-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3988-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3972-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3988-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1936-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3988-63-0x0000000000400000-0x0000000000414000-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	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	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe
Token: SeDebugPrivilege	1936	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
2252	csrsll.exe
1936	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 1188 wrote to memory of 3972	1188	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	83
PID 3972 wrote to memory of 4692	3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	88
PID 3972 wrote to memory of 4692	3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	88
PID 3972 wrote to memory of 4692	3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	88
PID 4692 wrote to memory of 1016	4692	cmd.exe	92
PID 4692 wrote to memory of 1016	4692	cmd.exe	92
PID 4692 wrote to memory of 1016	4692	cmd.exe	92
PID 3972 wrote to memory of 2252	3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	93
PID 3972 wrote to memory of 2252	3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	93
PID 3972 wrote to memory of 2252	3972	50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe	93
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 1936	2252	csrsll.exe	99
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100
PID 2252 wrote to memory of 3988	2252	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
"C:\Users\Admin\AppData\Local\Temp\50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Users\Admin\AppData\Local\Temp\50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe
  "C:\Users\Admin\AppData\Local\Temp\50255a7b196b25f2d303ad99cbf41c8bffdd3ae8c6670229200fbb68eb4a3354N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3972
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WYMRW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4692
  - - 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:1016
- - 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:2252
  - - 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:1936
  - - 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:3988

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\WYMRW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
5973e6a663086c4b5583c95ea1d65d05

SHA1
decce694a4ea67dc293e8a57248358e333459072

SHA256
2d00badd0ad95d356185b79c504cb694bf2fa7cab2f5d5e5ba25944baa099a82

SHA512
5ba3acf7565199ab317b59b89beca34b67c91daa917d8b47e1fe1caa3a8a96290ccb6b5469c6f574862d69f42fbc24d4f3d015eb69ae09f393a53967504f69f9

Download Submit
memory/1188-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/1188-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1188-6-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/1188-5-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/1188-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1188-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1936-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2252-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2252-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2252-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3972-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3972-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3972-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3972-56-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3972-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3972-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3988-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3988-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3988-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3988-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3988-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3988-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads