modiloader | 3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-01-2025 22:52

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General

Target

3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe
Size

90KB
MD5

daa9b91138417dbbb34a24882c394eff
SHA1

3956ef8c784d78643da8345d44f2d3b6583a21bb
SHA256

3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870
SHA512

0d90df6d3b230ced2054a3322dcf669a6fcc3c8dbda890a50b2ab02fe6a326b7a3b68dbf230907d017dcaa26a2cd15f5b6643233b5d3d63d75bf830dc2f444f5
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDI:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3i

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/2168-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2168-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2168-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2168-61-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe

Executes dropped EXE 3 IoCs

pid	Process
4424	csrsll.exe
3232	csrsll.exe
2168	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-1-5-21-940901362-3608833189-1915618603-1000\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 4044 set thread context of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4424 set thread context of 3232	4424	csrsll.exe	102
PID 4424 set thread context of 2168	4424	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4044-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4044-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3676-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3676-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3676-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4044-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b94-29.dat	upx
behavioral2/memory/3676-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4424-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4424-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2168-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2168-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2168-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2168-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4424-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2168-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3676-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3232-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2168-61-0x0000000000400000-0x0000000000414000-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	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.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	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe
Token: SeDebugPrivilege	3232	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe
3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe
4424	csrsll.exe
3232	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 4044 wrote to memory of 3676	4044	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	84
PID 3676 wrote to memory of 3316	3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	86
PID 3676 wrote to memory of 3316	3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	86
PID 3676 wrote to memory of 3316	3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	86
PID 3316 wrote to memory of 4580	3316	cmd.exe	91
PID 3316 wrote to memory of 4580	3316	cmd.exe	91
PID 3316 wrote to memory of 4580	3316	cmd.exe	91
PID 3676 wrote to memory of 4424	3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	92
PID 3676 wrote to memory of 4424	3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	92
PID 3676 wrote to memory of 4424	3676	3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe	92
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 3232	4424	csrsll.exe	102
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103
PID 4424 wrote to memory of 2168	4424	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe
"C:\Users\Admin\AppData\Local\Temp\3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Users\Admin\AppData\Local\Temp\3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe
  "C:\Users\Admin\AppData\Local\Temp\3b816289e55f706a7e27ae4edad5e1547463aa5e17de3edf68272e8aeb6a8870.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3676
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JWXAK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3316
  - - 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:4580
- - 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:4424
  - - 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:3232
  - - 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:2168

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\JWXAK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
1d4f14d33261922b7e8c013f532c60eb

SHA1
40e6a61bd6e3904de5c3f67147693d485e8f8962

SHA256
88605d7fcab4dee0428562928d1ceea0e34e7ce1fb0dc2a1be001e41ef00206b

SHA512
75f7d3a2baff62467af041ba60e441f117b3c93ffd715400856c73088b5f8b900e812a8cf7fabc16ad163c1e4f6e581f7b10e8f9324e1959b13c13ea4278ecbe

Download Submit
memory/2168-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3232-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3676-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3676-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3676-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3676-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3676-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3676-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4044-3-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/4044-5-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/4044-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4044-6-0x0000000002200000-0x0000000002202000-memory.dmp

Filesize
8KB

Download
memory/4044-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4044-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4424-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4424-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4424-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads