modiloader | c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a

Analysis

max time kernel
150s
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
14/01/2025, 08:13

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General

Target

c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
Size

94KB
MD5

544adb37fe11967819464c84268fc64d
SHA1

744bd4d885f8d46ef567502a43e54b498fe1d136
SHA256

c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a
SHA512

25e302bb33159d3fdaa513fae76271c7917c65cf6fb8072e0f79a5335a1d15e74ed63ecc010364971d8122aa19e4032986e7c4cc1bb3561c532894a0e37c73cd
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/K:/pdyLALwACPmV3NYaYLiwIt3raA5BRf/

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/2000-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2000-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2000-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2000-59-0x0000000000400000-0x0000000000414000-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	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe

Executes dropped EXE 3 IoCs

pid	Process
1996	csrsll.exe
1708	csrsll.exe
2000	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 1960 set thread context of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1996 set thread context of 1708	1996	csrsll.exe	88
PID 1996 set thread context of 2000	1996	csrsll.exe	89

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1960-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3464-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3464-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1960-9-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3464-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c9e-27.dat	upx
behavioral2/memory/1996-37-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1996-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/2000-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3464-47-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2000-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2000-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2000-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2000-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1996-55-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3464-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1708-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2000-59-0x0000000000400000-0x0000000000414000-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	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.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	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe
Token: SeDebugPrivilege	1708	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
1996	csrsll.exe
1708	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 1960 wrote to memory of 3464	1960	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	82
PID 3464 wrote to memory of 3944	3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	83
PID 3464 wrote to memory of 3944	3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	83
PID 3464 wrote to memory of 3944	3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	83
PID 3944 wrote to memory of 4460	3944	cmd.exe	86
PID 3944 wrote to memory of 4460	3944	cmd.exe	86
PID 3944 wrote to memory of 4460	3944	cmd.exe	86
PID 3464 wrote to memory of 1996	3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	87
PID 3464 wrote to memory of 1996	3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	87
PID 3464 wrote to memory of 1996	3464	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	87
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 1708	1996	csrsll.exe	88
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89
PID 1996 wrote to memory of 2000	1996	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
"C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
  "C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3464
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JKVSQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3944
  - - 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:4460
- - 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:1996
  - - 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:1708
  - - 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:2000

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\JKVSQ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
8f5efb2d410a5ee58e1d66858985d7ca

SHA1
1b3755b25b9455bf9d0e3dad32e29d9272766e38

SHA256
9571d918769c960b5990ea595287d4cb7f374685c6837e07561d3a2cb22703b7

SHA512
197571d6bbd8a2bab7e7f8f919dd1ca8b50db03fa97b238fd5c3d18bda1d35a290a1888f75ee0c5dd9fa87df83fc32a522ac61550e66f8b6649a85089621922a

Download Submit
memory/1708-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1960-3-0x00000000021E0000-0x00000000021E1000-memory.dmp

Filesize
4KB

Download
memory/1960-4-0x0000000002200000-0x0000000002201000-memory.dmp

Filesize
4KB

Download
memory/1960-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1960-9-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1996-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1996-55-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1996-37-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2000-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2000-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2000-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2000-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2000-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2000-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3464-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3464-47-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3464-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3464-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3464-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads