modiloader | 21d3d258f3901c48f25a0746458fce249c850613c7e70aa3e4a180194e057954

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 21:29

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General

Target

24d11b084104f150debee056179f5820N.exe
Size

90KB
MD5

24d11b084104f150debee056179f5820
SHA1

3d7199748e6eb8b51976cc70795a56987780a42b
SHA256

21d3d258f3901c48f25a0746458fce249c850613c7e70aa3e4a180194e057954
SHA512

b21f804e640fd44e47f8fdb342273330432a9a57b7f5b8062cea3d7353437bb0a0b181c17a60e375e6c8650b866b49e2efcfa949a01e92cc991341b5255cc452
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/1168-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1168-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1168-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1168-63-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	24d11b084104f150debee056179f5820N.exe

Executes dropped EXE 3 IoCs

pid	Process
1036	csrsll.exe
60	csrsll.exe
1168	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1900-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1900-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2920-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2920-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2920-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1900-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0009000000023c8a-29.dat	upx
behavioral2/memory/1036-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2920-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1036-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1036-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1168-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1036-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1168-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2920-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/60-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1168-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2629364133-3182087385-364449604-1000\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 1900 set thread context of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1036 set thread context of 60	1036	csrsll.exe	86
PID 1036 set thread context of 1168	1036	csrsll.exe	87

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	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	24d11b084104f150debee056179f5820N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	24d11b084104f150debee056179f5820N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe
Token: SeDebugPrivilege	60	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1900	24d11b084104f150debee056179f5820N.exe
2920	24d11b084104f150debee056179f5820N.exe
1036	csrsll.exe
60	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 1900 wrote to memory of 2920	1900	24d11b084104f150debee056179f5820N.exe	80
PID 2920 wrote to memory of 1696	2920	24d11b084104f150debee056179f5820N.exe	81
PID 2920 wrote to memory of 1696	2920	24d11b084104f150debee056179f5820N.exe	81
PID 2920 wrote to memory of 1696	2920	24d11b084104f150debee056179f5820N.exe	81
PID 1696 wrote to memory of 4288	1696	cmd.exe	84
PID 1696 wrote to memory of 4288	1696	cmd.exe	84
PID 1696 wrote to memory of 4288	1696	cmd.exe	84
PID 2920 wrote to memory of 1036	2920	24d11b084104f150debee056179f5820N.exe	85
PID 2920 wrote to memory of 1036	2920	24d11b084104f150debee056179f5820N.exe	85
PID 2920 wrote to memory of 1036	2920	24d11b084104f150debee056179f5820N.exe	85
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 60	1036	csrsll.exe	86
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87
PID 1036 wrote to memory of 1168	1036	csrsll.exe	87

C:\Users\Admin\AppData\Local\Temp\24d11b084104f150debee056179f5820N.exe
"C:\Users\Admin\AppData\Local\Temp\24d11b084104f150debee056179f5820N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\24d11b084104f150debee056179f5820N.exe
  "C:\Users\Admin\AppData\Local\Temp\24d11b084104f150debee056179f5820N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2920
- - 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:1696
  - - 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:4288
- - 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:1036
  - - 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:60
  - - 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:1168

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\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
e6ebb2cc593a0c7aeb4436cd162310bc

SHA1
b1d5273f8fdb645637a56b92052d47f3b9ccc20e

SHA256
03348a6a96d984302bba343c949c682faad2a3e6142406906e96a5487f5104c8

SHA512
a9771c001b4b25e7d56976d0fa57fc619a5edc2f7b0a302f1ec2e62ca255cb925029b56eb368df5215386a3b0b558f52962ec32dabeeb836385613badbeb0c3c

Download Submit
memory/60-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1036-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1036-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1036-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1036-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1168-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1900-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/1900-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1900-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1900-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1900-4-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/1900-3-0x0000000002400000-0x0000000002402000-memory.dmp

Filesize
8KB

Download
memory/2920-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2920-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2920-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2920-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2920-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads