modiloader | 87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2

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
23-12-2024 23:09

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General

Target

87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe
Size

90KB
MD5

4d1723e551cf1501a45b0b742304b5ef
SHA1

9b518926a288b6ad5efa4c1ed0f50c6fcedcbbee
SHA256

87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2
SHA512

792439367ac84f762289c5e2efe38b24d51d4a92cc7daecd45f3a5b492f0aa51a0cfeb0f1a7c957ac1013d0a3da0a552a359b99c352dae860d86478ab5533aa5
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDZ:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3P

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/3492-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3492-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3492-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3492-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe

Executes dropped EXE 3 IoCs

pid	Process
4956	csrsll.exe
3376	csrsll.exe
3492	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-1-5-21-3350944739-639801879-157714471-1000\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 3864 set thread context of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 4956 set thread context of 3376	4956	csrsll.exe	98
PID 4956 set thread context of 3492	4956	csrsll.exe	99

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3864-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3864-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2324-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2324-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2324-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2324-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3864-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b88-29.dat	upx
behavioral2/memory/2324-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4956-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3492-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3492-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4956-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3492-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3492-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3492-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4956-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2324-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3376-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3492-62-0x0000000000400000-0x0000000000414000-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	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.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	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe
Token: SeDebugPrivilege	3376	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe
2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe
4956	csrsll.exe
3376	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 3864 wrote to memory of 2324	3864	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	84
PID 2324 wrote to memory of 2756	2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	85
PID 2324 wrote to memory of 2756	2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	85
PID 2324 wrote to memory of 2756	2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	85
PID 2756 wrote to memory of 2312	2756	cmd.exe	89
PID 2756 wrote to memory of 2312	2756	cmd.exe	89
PID 2756 wrote to memory of 2312	2756	cmd.exe	89
PID 2324 wrote to memory of 4956	2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	90
PID 2324 wrote to memory of 4956	2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	90
PID 2324 wrote to memory of 4956	2324	87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe	90
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3376	4956	csrsll.exe	98
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99
PID 4956 wrote to memory of 3492	4956	csrsll.exe	99

C:\Users\Admin\AppData\Local\Temp\87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe
"C:\Users\Admin\AppData\Local\Temp\87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3864
- C:\Users\Admin\AppData\Local\Temp\87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe
  "C:\Users\Admin\AppData\Local\Temp\87c34b745d0bc6093dbbb7e05f2502e5bb01e93bb37df9a078421667ba4918b2.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2324
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\HSXTH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2756
  - - 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:2312
- - 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:4956
  - - 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:3376
  - - 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:3492

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\HSXTH.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
248405a7d618eb77f861fd4b385e29d8

SHA1
23373528300c0777446bf0c73a03ec455f97b8bd

SHA256
964dd69dd77efd16668c93f54c4df125628cb7479efa6db1e9beceb155823bf8

SHA512
65cc2da3cb121b52709ab9e393e15a4159f596165d827b06a8cf2491e72244e751b23c3f0470613523918a4bcb35f6d4662d3d77bb925f1e85e17a4e22790b37

Download Submit
memory/2324-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2324-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2324-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2324-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2324-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2324-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3376-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3492-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3492-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3492-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3492-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3492-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3492-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3864-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3864-4-0x0000000002C70000-0x0000000002C72000-memory.dmp

Filesize
8KB

Download
memory/3864-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3864-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3864-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3864-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads