modiloader | 7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 23:21

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General

Target

7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe
Size

90KB
MD5

c0a804f60f9e9c28236de07d117703ca
SHA1

ad1fa326a6ada19fd1cf7013d0ed1cd515a2fa42
SHA256

7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c
SHA512

1a0bb4095a11a5c2c1677e9e5cf6d2c3e86fd3c4eee1ac2c1d4508372db2faf72d68c390f0ef2c57a6ee726ec571da54611c252b1bec9af50210ac561469cc19
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/404-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/404-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/404-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/404-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe

Executes dropped EXE 3 IoCs

pid	Process
4608	csrsll.exe
412	csrsll.exe
404	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3616-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3616-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/64-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/64-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3616-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/64-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0003000000022f9b-29.dat	upx
behavioral2/memory/4608-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/64-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4608-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4608-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/404-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/404-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4608-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/404-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/64-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/404-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/404-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/412-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/404-62-0x0000000000400000-0x0000000000414000-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 3616 set thread context of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 4608 set thread context of 412	4608	csrsll.exe	97
PID 4608 set thread context of 404	4608	csrsll.exe	98

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	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe
Token: SeDebugPrivilege	412	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe
64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe
4608	csrsll.exe
412	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 3616 wrote to memory of 64	3616	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	86
PID 64 wrote to memory of 3000	64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	87
PID 64 wrote to memory of 3000	64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	87
PID 64 wrote to memory of 3000	64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	87
PID 3000 wrote to memory of 5076	3000	cmd.exe	90
PID 3000 wrote to memory of 5076	3000	cmd.exe	90
PID 3000 wrote to memory of 5076	3000	cmd.exe	90
PID 64 wrote to memory of 4608	64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	93
PID 64 wrote to memory of 4608	64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	93
PID 64 wrote to memory of 4608	64	7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe	93
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 412	4608	csrsll.exe	97
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98
PID 4608 wrote to memory of 404	4608	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe
"C:\Users\Admin\AppData\Local\Temp\7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Users\Admin\AppData\Local\Temp\7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe
  "C:\Users\Admin\AppData\Local\Temp\7daac1bc38afb3cd438b1a7aa311af1e8cdefc7818c036092a34a76445551c8c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:64
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LKOCF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3000
  - - 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:5076
- - 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:4608
  - - 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:412
  - - 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:404

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\LKOCF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
344bcd5c744b15c33860bd5f17273caa

SHA1
8334f56287dc7f70f2ecc71f9b7704d3566c4491

SHA256
549c0d6c892ec83f69a1d929b6f79c2317f1bb4b6754eedb6f9af8573878aae5

SHA512
65bbc8597be1fb6c2c2fcc5235b5cf2dda817523740efe84d84a3e0f094263472f8944fec4d0c67c83df3b11c57e054d363277083b6cf439b8153bd87132ce31

Download Submit
memory/64-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/64-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/64-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/64-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/64-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/404-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/404-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/404-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/404-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/404-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/404-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/412-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3616-6-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3616-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3616-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3616-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3616-3-0x0000000002B40000-0x0000000002B42000-memory.dmp

Filesize
8KB

Download
memory/3616-4-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/4608-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4608-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4608-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4608-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads