modiloader | 76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 02:30

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General

Target

76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
Size

90KB
MD5

f506e615a70cbcdf2e4968b5d6c61d70
SHA1

8f74818cdee5fc6393e46e88f9de046c44682cff
SHA256

76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9c
SHA512

b68f253d50c9033dd3b8fd4854ada7aa78fa7cbb846f22c89aea2c24c9c114df235ad5440ef212103442c145d46bf6382dd1684b4995c5b75853f94297963469
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/2716-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2716-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2716-62-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2716-64-0x0000000000400000-0x0000000000414000-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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe

Executes dropped EXE 3 IoCs

pid	Process
3368	csrsll.exe
4788	csrsll.exe
2716	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3416-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3416-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/960-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3416-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/960-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/960-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00080000000233a0-30.dat	upx
behavioral2/memory/3368-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/960-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3368-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2716-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3368-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3368-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/960-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2716-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-62-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4788-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2716-64-0x0000000000400000-0x0000000000414000-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-1-5-21-2412658365-3084825385-3340777666-1000\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 3416 set thread context of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3368 set thread context of 4788	3368	csrsll.exe	94
PID 3368 set thread context of 2716	3368	csrsll.exe	95

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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe
Token: SeDebugPrivilege	4788	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
3368	csrsll.exe
4788	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 3416 wrote to memory of 960	3416	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	85
PID 960 wrote to memory of 856	960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	87
PID 960 wrote to memory of 856	960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	87
PID 960 wrote to memory of 856	960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	87
PID 856 wrote to memory of 1472	856	cmd.exe	90
PID 856 wrote to memory of 1472	856	cmd.exe	90
PID 856 wrote to memory of 1472	856	cmd.exe	90
PID 960 wrote to memory of 3368	960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	91
PID 960 wrote to memory of 3368	960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	91
PID 960 wrote to memory of 3368	960	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	91
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 4788	3368	csrsll.exe	94
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95
PID 3368 wrote to memory of 2716	3368	csrsll.exe	95

C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
"C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
  "C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:960
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AEGST.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:856
  - - 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:1472
- - 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:3368
  - - 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:4788
  - - 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:2716

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\AEGST.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b3e6760b30d0a666b7e5437ce4f3b614

SHA1
cf48cdfa32f0ba239f76f20b83db783dde10e563

SHA256
937485bb564e0f6a8090435cc836a14a61ba105dc603f40145554781093aae05

SHA512
8f07f695d82858b0fd659ab601827b2c4fe9322f5c0efd3548a06f916ab31e4a7a3605a08deb0702a66e8a6d994418bf0a24ba27048841fa810578ba1f308462

Download Submit
memory/960-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/960-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/960-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/960-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/960-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2716-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3368-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3368-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3416-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3416-7-0x0000000002BA0000-0x0000000002BA2000-memory.dmp

Filesize
8KB

Download
memory/3416-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3416-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3416-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/3416-4-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3416-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4788-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads