modiloader | c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e

Analysis

max time kernel
149s
max time network
148s
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 04:57

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General

Target

c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe
Size

90KB
MD5

c7dc699a5a1ae692c90a93072dc68bb8
SHA1

278fe0d2dfb55deb3ed4cbb42c51307bbfd7682d
SHA256

c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e
SHA512

85d9ac7e0f89fcbe50bc1ed682e4bd5f7d4af674a2f3e5d82f4b72f53247a0b10a7d170b727ddd3942d2fc10b9f3f88e7670c4ad6bc45c264bdbc243be42f56d
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD1:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3X

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/1004-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1004-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1004-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1004-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe

Executes dropped EXE 3 IoCs

pid	Process
3012	csrsll.exe
1636	csrsll.exe
1004	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-1-5-21-3227495264-2217614367-4027411560-1000\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 3128 set thread context of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3012 set thread context of 1636	3012	csrsll.exe	95
PID 3012 set thread context of 1004	3012	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3128-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3128-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4524-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3128-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4524-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b66-28.dat	upx
behavioral2/memory/4524-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3012-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3012-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1004-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1004-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1004-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1004-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1004-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3012-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4524-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1636-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1004-61-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe
Token: SeDebugPrivilege	1636	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe
4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe
3012	csrsll.exe
1636	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 3128 wrote to memory of 4524	3128	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	86
PID 4524 wrote to memory of 2936	4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	87
PID 4524 wrote to memory of 2936	4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	87
PID 4524 wrote to memory of 2936	4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	87
PID 2936 wrote to memory of 2552	2936	cmd.exe	90
PID 2936 wrote to memory of 2552	2936	cmd.exe	90
PID 2936 wrote to memory of 2552	2936	cmd.exe	90
PID 4524 wrote to memory of 3012	4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	91
PID 4524 wrote to memory of 3012	4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	91
PID 4524 wrote to memory of 3012	4524	c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe	91
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1636	3012	csrsll.exe	95
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96
PID 3012 wrote to memory of 1004	3012	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe
"C:\Users\Admin\AppData\Local\Temp\c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Users\Admin\AppData\Local\Temp\c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe
  "C:\Users\Admin\AppData\Local\Temp\c0f3115fe31879a904358dc4bd0252abfd8c46afeda3c9234860185d0610838e.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DYCNK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2936
  - - 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:2552
- - 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:3012
  - - 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:1636
  - - 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:1004

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\DYCNK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
2ef0118ec35a869c9382b9f3c8cd0139

SHA1
55eef5f26e3fc634d8d4bde1607f639d40d80f41

SHA256
118050a271724e9eda5109909c2610e772f299d7989ca99b33c27e5511ded5f6

SHA512
5754bef63dcb411e70d3d2e7568e59afe3ee60f683d8cae905c8ac039b712c4b16019f1d1e051d4213c2af0b2edc61835edf90ed7449c3d10d64e2ad67da6093

Download Submit
memory/1004-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1004-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1004-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1004-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1004-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1004-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1636-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3012-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3012-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3012-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-6-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/3128-4-0x0000000002C60000-0x0000000002C62000-memory.dmp

Filesize
8KB

Download
memory/3128-3-0x0000000002400000-0x0000000002402000-memory.dmp

Filesize
8KB

Download
memory/4524-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4524-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads