modiloader | 1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2024 19:19

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General

Target

1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe
Size

90KB
MD5

c2d924c0886b51c568b8ef5f71362fcc
SHA1

ab497b6d53df329319b3518452de8739caa3f151
SHA256

1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075
SHA512

b823a84501df65837a81493914c6e82b569e735c04d2a6c42602841d487c58464b0a796717e8c33019936ea3a72d78393df2a9b7ddd8fcbc4323c34565f5d042
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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4544-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4544-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4544-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4544-63-0x0000000000400000-0x0000000000414000-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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe

Executes dropped EXE 3 IoCs

pid	Process
4244	csrsll.exe
4896	csrsll.exe
4544	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-1-5-21-355097885-2402257403-2971294179-1000\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 1668 set thread context of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 4244 set thread context of 4896	4244	csrsll.exe	95
PID 4244 set thread context of 4544	4244	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1668-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1668-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3028-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3028-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1668-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3028-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023479-29.dat	upx
behavioral2/memory/4244-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3028-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4244-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4244-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4544-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4544-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4544-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4544-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4544-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4244-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3028-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4896-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4544-63-0x0000000000400000-0x0000000000414000-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	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe
3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe
4244	csrsll.exe
4896	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 1668 wrote to memory of 3028	1668	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	85
PID 3028 wrote to memory of 5012	3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	86
PID 3028 wrote to memory of 5012	3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	86
PID 3028 wrote to memory of 5012	3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	86
PID 5012 wrote to memory of 3396	5012	cmd.exe	89
PID 5012 wrote to memory of 3396	5012	cmd.exe	89
PID 5012 wrote to memory of 3396	5012	cmd.exe	89
PID 3028 wrote to memory of 4244	3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	90
PID 3028 wrote to memory of 4244	3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	90
PID 3028 wrote to memory of 4244	3028	1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe	90
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4896	4244	csrsll.exe	95
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96
PID 4244 wrote to memory of 4544	4244	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe
"C:\Users\Admin\AppData\Local\Temp\1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe
  "C:\Users\Admin\AppData\Local\Temp\1b8d8f0a9bc65275035b72043700440e7100eaa0581f952a4d3db5172db11075.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ONHRY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5012
  - - 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:3396
- - 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:4244
  - - 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:4896
  - - 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:4544

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\ONHRY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
4607ad2d53601cb5b25d794b9fcea8d9

SHA1
78f9ff2f1796a22abafb02f5d0a61e344bb9ece9

SHA256
e7a73ca23b696f33aa3e920e3c60d34528b34d29f030407e296ed8c5148be963

SHA512
81d49777f0be07a9d3fe51521f67c175ad8108f14c0b0d1ac6b0fc7f5446fce3d2ac398693b836c98d4e0644fc93ba8ad11e71185d06903b39c80d1e55eb74e0

Download Submit
memory/1668-3-0x0000000002B30000-0x0000000002B32000-memory.dmp

Filesize
8KB

Download
memory/1668-4-0x0000000002B40000-0x0000000002B42000-memory.dmp

Filesize
8KB

Download
memory/1668-6-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/1668-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1668-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1668-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3028-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3028-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3028-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3028-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3028-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4244-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4244-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4244-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4244-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4544-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4544-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4544-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4544-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4544-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4896-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads