modiloader | d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61f

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-11-2024 10:04

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General

Target

d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe
Size

90KB
MD5

49d690d3250959138d681a598a3cd3b0
SHA1

06cd30436a6dff6e0b5ba30e01ba5547584211f9
SHA256

d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61f
SHA512

81f1620c06152eb38a1b6b4b307811a23cc0befd5dd76e3edf9059b214c35bdd0a1105e03f0dc000cef7c130a4f21033d0e277481e7d4c37803848c401864f09
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 family
modiloader

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5108-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5108-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5108-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5108-63-0x0000000000400000-0x0000000000414000-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

Processes:

d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
4784	csrsll.exe
1864	csrsll.exe
5108	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.execsrsll.exe

description	pid	Process	procid_target
PID 4944 set thread context of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4784 set thread context of 1864	4784	csrsll.exe	102
PID 4784 set thread context of 5108	4784	csrsll.exe	103

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4944-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4944-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4484-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4484-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4944-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4484-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c78-29.dat	upx
behavioral2/memory/4784-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4484-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4784-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4784-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5108-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5108-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5108-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5108-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5108-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4784-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4484-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1864-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5108-63-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.exed7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exed7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.execmd.exereg.execsrsll.execsrsll.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.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

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe
Token: SeDebugPrivilege	1864	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exed7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.execsrsll.execsrsll.exe

pid	Process
4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe
4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe
4784	csrsll.exe
1864	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exed7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4944 wrote to memory of 4484	4944	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	93
PID 4484 wrote to memory of 3884	4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	94
PID 4484 wrote to memory of 3884	4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	94
PID 4484 wrote to memory of 3884	4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	94
PID 3884 wrote to memory of 3404	3884	cmd.exe	99
PID 3884 wrote to memory of 3404	3884	cmd.exe	99
PID 3884 wrote to memory of 3404	3884	cmd.exe	99
PID 4484 wrote to memory of 4784	4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	101
PID 4484 wrote to memory of 4784	4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	101
PID 4484 wrote to memory of 4784	4484	d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe	101
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 1864	4784	csrsll.exe	102
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103
PID 4784 wrote to memory of 5108	4784	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe
"C:\Users\Admin\AppData\Local\Temp\d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4944
- C:\Users\Admin\AppData\Local\Temp\d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe
  "C:\Users\Admin\AppData\Local\Temp\d7df3b7c92759f3574f0023e4c334910df93c039d2018006c7445703f4ece61fN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4484
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QOMRE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3884
  - - 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:3404
- - 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:4784
  - - 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:1864
  - - 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:5108

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\QOMRE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
8af962f4730d464b3594b57fbaac864b

SHA1
ec4ea3ec39c511b883c9657670f9d6fc6d0b8369

SHA256
a53b75cd666e924879fa9aed519d8d191ff4ee958919d32f8ab558b1373e88de

SHA512
a5bf12731b45a3ae053c8fc510ee5f384e9888546e20ee84048b7597118e14c13864ebb0cf1596f386232002fa3b179cc4afba63cce754425369d5f4f0794d67

Download Submit
memory/1864-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4484-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4484-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4484-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4484-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4484-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4484-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4784-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4784-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4784-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4784-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4944-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4944-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4944-6-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4944-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4944-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4944-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/5108-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5108-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5108-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5108-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5108-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5108-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download