modiloader | 1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbe

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 03:07

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General

Target

1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
Size

90KB
MD5

77e8ee6dba863ab5781b34af6bd39570
SHA1

48f5b6ce654091910bafe91d61b5ab3be5244377
SHA256

1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbe
SHA512

8625ae1cd3f3c9a6757280954ed10680b6a632b3c7a6a0f32a0f3e6f4a94db755805603c2b010af68009dc81be32ba05ad4c0ad490499d2dde1014b4127b6dda
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/3100-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3100-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3100-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3100-63-0x0000000000400000-0x0000000000414000-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	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe

Executes dropped EXE 3 IoCs

pid	Process
3596	csrsll.exe
3044	csrsll.exe
3100	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 4304 set thread context of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 3596 set thread context of 3044	3596	csrsll.exe	95
PID 3596 set thread context of 3100	3596	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4304-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4304-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4068-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4068-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4304-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4068-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c65-29.dat	upx
behavioral2/memory/3596-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4068-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3596-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3596-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3100-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3100-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3100-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3100-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3100-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3596-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4068-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3044-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3100-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe
Token: SeDebugPrivilege	3044	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
3596	csrsll.exe
3044	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4304 wrote to memory of 4068	4304	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	83
PID 4068 wrote to memory of 3264	4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	84
PID 4068 wrote to memory of 3264	4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	84
PID 4068 wrote to memory of 3264	4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	84
PID 3264 wrote to memory of 2400	3264	cmd.exe	88
PID 3264 wrote to memory of 2400	3264	cmd.exe	88
PID 3264 wrote to memory of 2400	3264	cmd.exe	88
PID 4068 wrote to memory of 3596	4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	89
PID 4068 wrote to memory of 3596	4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	89
PID 4068 wrote to memory of 3596	4068	1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe	89
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3044	3596	csrsll.exe	95
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96
PID 3596 wrote to memory of 3100	3596	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
"C:\Users\Admin\AppData\Local\Temp\1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe
  "C:\Users\Admin\AppData\Local\Temp\1d98095ef74f0fd58bf1b844897e78556e531597db21795fb92f72fa6fca5bbeN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4068
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UILHF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3264
  - - 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:2400
- - 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:3596
  - - 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:3044
  - - 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:3100

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\UILHF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e26026a5c9440757771d4b26bba29ec3

SHA1
7ecc674162a3b7e6cc62e7b3d1d2e870a70749fa

SHA256
42073668566ea667a1460124fdf0a5ecbe9669600dbdd542ffe8da83cc94c43a

SHA512
fc43c66245e8b48fcf90863b63fadea7b0f649b7f7a94119802efca6226ace3081efd3c0670983b6cd7084db19810e5b0753994f2a0a311b6ddc1610c4365226

Download Submit
memory/3044-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3100-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3100-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3100-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3100-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3100-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3100-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3596-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3596-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3596-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3596-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4068-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4068-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4068-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4068-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4068-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4304-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4304-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4304-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4304-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4304-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4304-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads