modiloader | 2102e203e459cc4fbfd36ad93241b255218745b6bafee70738a1a7aad73381e8

Analysis

max time kernel
119s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-09-2024 22:18

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General

Target

c6f6f39827d503e28f18a96088c210b0N.exe
Size

90KB
MD5

c6f6f39827d503e28f18a96088c210b0
SHA1

803510743577aed6bcda2a61ba6b633caf1000d1
SHA256

2102e203e459cc4fbfd36ad93241b255218745b6bafee70738a1a7aad73381e8
SHA512

5023cc10d16fb6a1193cb8f431b4a20d7de32e072caf2fda830687e0867ed8d300e6fc7390aaff3b8074e386ba111f817c0f920cc56fdd60afe76ccb2b0472da
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/2972-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2972-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2972-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2972-61-0x0000000000400000-0x0000000000414000-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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	c6f6f39827d503e28f18a96088c210b0N.exe

Executes dropped EXE 3 IoCs

pid	Process
2216	csrsll.exe
4100	csrsll.exe
2972	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2916-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2952-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2952-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2952-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2916-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023429-29.dat	upx
behavioral2/memory/2216-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2952-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2216-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2216-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2972-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2972-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2972-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2216-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2972-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2972-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2952-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4100-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2972-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-1194130065-3471212556-1656947724-1000\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 2916 set thread context of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2216 set thread context of 4100	2216	csrsll.exe	96
PID 2216 set thread context of 2972	2216	csrsll.exe	97

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	c6f6f39827d503e28f18a96088c210b0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c6f6f39827d503e28f18a96088c210b0N.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	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe
Token: SeDebugPrivilege	4100	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2916	c6f6f39827d503e28f18a96088c210b0N.exe
2952	c6f6f39827d503e28f18a96088c210b0N.exe
2216	csrsll.exe
4100	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2916 wrote to memory of 2952	2916	c6f6f39827d503e28f18a96088c210b0N.exe	86
PID 2952 wrote to memory of 2524	2952	c6f6f39827d503e28f18a96088c210b0N.exe	87
PID 2952 wrote to memory of 2524	2952	c6f6f39827d503e28f18a96088c210b0N.exe	87
PID 2952 wrote to memory of 2524	2952	c6f6f39827d503e28f18a96088c210b0N.exe	87
PID 2524 wrote to memory of 4276	2524	cmd.exe	90
PID 2524 wrote to memory of 4276	2524	cmd.exe	90
PID 2524 wrote to memory of 4276	2524	cmd.exe	90
PID 2952 wrote to memory of 2216	2952	c6f6f39827d503e28f18a96088c210b0N.exe	91
PID 2952 wrote to memory of 2216	2952	c6f6f39827d503e28f18a96088c210b0N.exe	91
PID 2952 wrote to memory of 2216	2952	c6f6f39827d503e28f18a96088c210b0N.exe	91
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 4100	2216	csrsll.exe	96
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97
PID 2216 wrote to memory of 2972	2216	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\c6f6f39827d503e28f18a96088c210b0N.exe
"C:\Users\Admin\AppData\Local\Temp\c6f6f39827d503e28f18a96088c210b0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Local\Temp\c6f6f39827d503e28f18a96088c210b0N.exe
  "C:\Users\Admin\AppData\Local\Temp\c6f6f39827d503e28f18a96088c210b0N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2952
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BXWAN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2524
  - - 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:4276
- - 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:2216
  - - 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:4100
  - - 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:2972

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\BXWAN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
4bd6c684388d312c2508fdc9d2c2089c

SHA1
8c1c7d3d189976b006e8738728f71219f2b31020

SHA256
9b30e08fb14fac3bd0fa1049f8ce3257e8359fd81bb86ccd1e981789da1074ab

SHA512
8b07df63410b21013cb80f5b0728454cb2fb12f1fdb6f9ee287c51eafe6318592ded07f19b8764963b8f9a214cf41b48396a791760f0217df75b1b22592e3427

Download Submit
memory/2216-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2216-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2916-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/2916-4-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/2916-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/2916-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2916-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2916-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2952-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2952-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2952-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2952-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2952-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2952-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2972-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2972-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2972-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2972-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2972-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2972-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4100-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads