modiloader | 85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c

Analysis

max time kernel
118s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 02:44

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General

Target

85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe
Size

90KB
MD5

7e96c5bf3660b0313d611908d314d870
SHA1

3975d62646372521922f23b2c9df6a5d5665ebe4
SHA256

85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c
SHA512

dac5488c83e01b8d6b1e1958432b29c5bd5327a0786114dc807c36f24905c35d353473114da59b0b711973820c39e8768ab6d7b1e34f49ba28e7ae66e62a6bf7
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDj:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE31

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/4724-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4724-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4724-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4724-62-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe

Executes dropped EXE 3 IoCs

pid	Process
4296	csrsll.exe
4048	csrsll.exe
4724	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-1-5-21-1045960512-3948844814-3059691613-1000\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 4192 set thread context of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4296 set thread context of 4048	4296	csrsll.exe	97
PID 4296 set thread context of 4724	4296	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4192-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3792-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3792-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3792-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4192-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c98-29.dat	upx
behavioral2/memory/3792-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4296-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4296-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4724-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4296-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3792-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4724-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4048-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4724-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.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

description	pid	Process
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe
Token: SeDebugPrivilege	4048	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe
3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe
4296	csrsll.exe
4048	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 4192 wrote to memory of 3792	4192	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	83
PID 3792 wrote to memory of 1664	3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	84
PID 3792 wrote to memory of 1664	3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	84
PID 3792 wrote to memory of 1664	3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	84
PID 1664 wrote to memory of 432	1664	cmd.exe	88
PID 1664 wrote to memory of 432	1664	cmd.exe	88
PID 1664 wrote to memory of 432	1664	cmd.exe	88
PID 3792 wrote to memory of 4296	3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	91
PID 3792 wrote to memory of 4296	3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	91
PID 3792 wrote to memory of 4296	3792	85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe	91
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4048	4296	csrsll.exe	97
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98
PID 4296 wrote to memory of 4724	4296	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe
"C:\Users\Admin\AppData\Local\Temp\85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Users\Admin\AppData\Local\Temp\85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe
  "C:\Users\Admin\AppData\Local\Temp\85b8febc31e754e9d3771cf16bb468cf77b31b39a10d8649676bfeba8acc711c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3792
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LQBDG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1664
  - - 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:432
- - 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:4296
  - - 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:4048
  - - 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:4724

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\LQBDG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0757669987e62b6f6ed13c0293c419ab

SHA1
f68ce86956de3e8460659a48d0fb46719ac744ab

SHA256
82c31ea192d529ffec998a9c80bdf15b30e0db5d275d0ded02a10db6d821876a

SHA512
d8fe3aaaf255c4274ac68683903369643427a87f285b89394b0d239c2dc0f23f93d28c94420dbba46c298be4967ee2375998fb6f7fb3cf07095ba758decccc10

Download Submit
memory/3792-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3792-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3792-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3792-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3792-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3792-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4048-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4192-6-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/4192-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4192-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4192-4-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/4192-3-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/4192-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4296-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4296-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4296-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4724-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads