modiloader | 099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37b

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
22/12/2024, 07:02

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General

Target

099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe
Size

90KB
MD5

be537fadaf7196dcae42355e8087b810
SHA1

45203d566b3bf8f6a0233d70f39b1012de580430
SHA256

099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37b
SHA512

2103a3c23a53342a032a1ac7ea4ecd2ef644adf86c307e403f1e76ef67ab2e5e7b707910f016e5c11258ae6c91d5a34519fdf4fe11f2adf7e622b75f7f4869d3
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDM:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE32

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/3556-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3556-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3556-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3556-60-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe

Executes dropped EXE 3 IoCs

pid	Process
4768	csrsll.exe
4000	csrsll.exe
3556	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-1-5-21-2437139445-1151884604-3026847218-1000\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 3412 set thread context of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 4768 set thread context of 4000	4768	csrsll.exe	102
PID 4768 set thread context of 3556	4768	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3412-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3412-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2688-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2688-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3412-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2688-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b8e-29.dat	upx
behavioral2/memory/4768-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4768-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2688-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3556-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3556-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3556-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3556-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3556-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4768-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2688-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4000-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3556-60-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe
Token: SeDebugPrivilege	4000	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe
2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe
4768	csrsll.exe
4000	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 3412 wrote to memory of 2688	3412	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	85
PID 2688 wrote to memory of 1460	2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	90
PID 2688 wrote to memory of 1460	2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	90
PID 2688 wrote to memory of 1460	2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	90
PID 1460 wrote to memory of 2908	1460	cmd.exe	94
PID 1460 wrote to memory of 2908	1460	cmd.exe	94
PID 1460 wrote to memory of 2908	1460	cmd.exe	94
PID 2688 wrote to memory of 4768	2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	95
PID 2688 wrote to memory of 4768	2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	95
PID 2688 wrote to memory of 4768	2688	099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe	95
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 4000	4768	csrsll.exe	102
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103
PID 4768 wrote to memory of 3556	4768	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe
"C:\Users\Admin\AppData\Local\Temp\099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Users\Admin\AppData\Local\Temp\099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe
  "C:\Users\Admin\AppData\Local\Temp\099cbf9f1d83f5ea59b132b13ee53c5df1a78468c1192531d4bba8361cafd37bN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UCQPB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1460
  - - 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:2908
- - 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:4768
  - - 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:4000
  - - 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:3556

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\UCQPB.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f97854dca7b0743bdf23f764960d6589

SHA1
d45e93fd9ef9a40cd3f9d2eb5c73c1659810b788

SHA256
d5d7c0853f656ecd7d0801c94b8445738b89cb91f1404833b643a0d85a234594

SHA512
9231875f8e91dd26cba95d176399b963c71df04cac5098679d0f51f4e80d111b6d204c4a11d2c319d7bb582851fc7cb933d585397f43714e706b778da520ed2a

Download Submit
memory/2688-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2688-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2688-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2688-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2688-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3412-6-0x0000000002950000-0x0000000002952000-memory.dmp

Filesize
8KB

Download
memory/3412-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3412-4-0x0000000002920000-0x0000000002922000-memory.dmp

Filesize
8KB

Download
memory/3412-3-0x0000000002910000-0x0000000002912000-memory.dmp

Filesize
8KB

Download
memory/3412-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3412-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3556-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3556-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3556-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3556-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3556-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3556-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4000-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4768-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4768-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4768-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads