modiloader | b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 16:29

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General

Target

b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
Size

90KB
MD5

845b73f97078eddbdc8e3a73d0def301
SHA1

003de6eb521f005c59323de33372ae0f695f8ca2
SHA256

b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6
SHA512

96ebebfd8d6dba585174b87994f5ab042cdb5d00a61a1f3f2b9f4f112fde3b079253c7be90bb69639c0e08962bfe972c5d3998c8a76923b164cd66de65efc241
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD9:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE33

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/3228-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3228-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3228-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3228-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe

Executes dropped EXE 3 IoCs

pid	Process
780	csrsll.exe
2556	csrsll.exe
3228	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-1-5-21-4089630652-1596403869-279772308-1000\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 4880 set thread context of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 780 set thread context of 2556	780	csrsll.exe	93
PID 780 set thread context of 3228	780	csrsll.exe	94

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4880-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4880-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2948-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2948-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2948-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4880-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000f000000023bae-29.dat	upx
behavioral2/memory/2948-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/780-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/780-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3228-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3228-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3228-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3228-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/780-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3228-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2948-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2556-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3228-62-0x0000000000400000-0x0000000000414000-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	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.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	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe
Token: SeDebugPrivilege	2556	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
780	csrsll.exe
2556	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 4880 wrote to memory of 2948	4880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	82
PID 2948 wrote to memory of 1660	2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	83
PID 2948 wrote to memory of 1660	2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	83
PID 2948 wrote to memory of 1660	2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	83
PID 1660 wrote to memory of 4040	1660	cmd.exe	86
PID 1660 wrote to memory of 4040	1660	cmd.exe	86
PID 1660 wrote to memory of 4040	1660	cmd.exe	86
PID 2948 wrote to memory of 780	2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	87
PID 2948 wrote to memory of 780	2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	87
PID 2948 wrote to memory of 780	2948	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	87
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 2556	780	csrsll.exe	93
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94
PID 780 wrote to memory of 3228	780	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
"C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
  "C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CHVUG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1660
  - - 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:4040
- - 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:780
  - - 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:2556
  - - 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:3228

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\CHVUG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
c46e0e65eaa0935beaca9c8915a502d8

SHA1
36bbdd28e30b9e90fbc572df334db3f660c063cc

SHA256
b5445d3e075e4179acacb040b5c114d93e2148a87dae2c586c640d30a9cde982

SHA512
e1f70b9d737237b382766366f1dfbc0be698dcb9235f5951e34ccd98fa2a16d574b487e81d1caf1cd9270cc656ea7a7425af3c0c04d14dd14a5bf07bc2787eee

Download Submit
memory/780-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/780-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/780-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2556-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3228-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3228-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3228-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3228-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3228-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3228-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4880-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/4880-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4880-3-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/4880-5-0x0000000002430000-0x0000000002432000-memory.dmp

Filesize
8KB

Download
memory/4880-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4880-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads