modiloader | cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44

Analysis

max time kernel
119s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 18:42

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General

Target

cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe
Size

90KB
MD5

e0d3940e765be8eff5057203e0b0d760
SHA1

5b95784a08caa965014bcec8069518e87dbb29af
SHA256

cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44
SHA512

50001459a1d2b50a7fdcbd17e80ffb862374b6909cd3bc97a4349efcb182370e0386a49a314cc57b542496404c7fc907f811bea5e46c68a97322bd45442ae024
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDM:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3W

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/1508-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1508-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1508-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1508-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe

Executes dropped EXE 3 IoCs

pid	Process
3176	csrsll.exe
3060	csrsll.exe
1508	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-1-5-21-2437139445-1151884604-3026847218-1000\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 4236 set thread context of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 3176 set thread context of 3060	3176	csrsll.exe	95
PID 3176 set thread context of 1508	3176	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4236-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4236-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3304-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3304-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4236-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3304-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b93-29.dat	upx
behavioral2/memory/3304-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3176-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3176-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1508-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1508-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1508-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1508-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3176-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1508-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3304-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3060-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1508-61-0x0000000000400000-0x0000000000414000-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	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe
Token: SeDebugPrivilege	3060	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe
3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe
3176	csrsll.exe
3060	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 4236 wrote to memory of 3304	4236	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	83
PID 3304 wrote to memory of 224	3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	84
PID 3304 wrote to memory of 224	3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	84
PID 3304 wrote to memory of 224	3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	84
PID 224 wrote to memory of 632	224	cmd.exe	88
PID 224 wrote to memory of 632	224	cmd.exe	88
PID 224 wrote to memory of 632	224	cmd.exe	88
PID 3304 wrote to memory of 3176	3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	89
PID 3304 wrote to memory of 3176	3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	89
PID 3304 wrote to memory of 3176	3304	cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe	89
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 3060	3176	csrsll.exe	95
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96
PID 3176 wrote to memory of 1508	3176	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe
"C:\Users\Admin\AppData\Local\Temp\cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Users\Admin\AppData\Local\Temp\cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe
  "C:\Users\Admin\AppData\Local\Temp\cdbf62b5022caa1e0fd6b68feea80a08ccd6a0e6316f8c749fb928c8b8b08e44N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3304
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XWSTG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:224
  - - 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:632
- - 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:3176
  - - 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:3060
  - - 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:1508

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\XWSTG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
616e3b531e3d32fedbe98e4ba53b723b

SHA1
f05555e4832d3b3b391be5853cecfebc3fc26705

SHA256
294e99fbe7018edc38f243fa5a994d75446d395bc21ef387cb2654398fc7a566

SHA512
5bcb6c741e474d707314f8d4aa527803ea5626c88a6d9b3550dc2e05ce1070fc26395cdb120f8a6d9ecf88deba25f4204ba823fae8c0dc7aa88a8a5fe35e93ed

Download Submit
memory/1508-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1508-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1508-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1508-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1508-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1508-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3176-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3176-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3176-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3304-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3304-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3304-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3304-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3304-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4236-5-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/4236-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4236-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/4236-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4236-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4236-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads