modiloader | 7eb08bb176f4afae1f9a3c619d8c32425ce15edcd06d9ce15257bb301e836092

Analysis

max time kernel
119s
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
11-11-2024 14:50

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General

Target

47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe
Size

90KB
MD5

a83518f0f756396a9d6fc176e3710e3f
SHA1

aa3c6a1235f59df3e975abe5df45b5e62f3cd9c8
SHA256

7eb08bb176f4afae1f9a3c619d8c32425ce15edcd06d9ce15257bb301e836092
SHA512

62934339adbbbe87fb66fb2c7f40f7069e7756aa6e1b059ab6920d8df89e878852d3f1f80de536a6a57cbeba1241a5e4c250730eda377574a963965acefc4270
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDi:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3U

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/3012-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3012-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3012-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3012-63-0x0000000000400000-0x0000000000414000-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:

47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
516	csrsll.exe
1000	csrsll.exe
3012	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.execsrsll.exe

description	pid	Process	procid_target
PID 4780 set thread context of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 516 set thread context of 1000	516	csrsll.exe	99
PID 516 set thread context of 3012	516	csrsll.exe	100

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4780-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1744-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4780-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4780-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000d000000023b59-29.dat	upx
behavioral2/memory/1744-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/516-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/516-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3012-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3012-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3012-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3012-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3012-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/516-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1000-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3012-63-0x0000000000400000-0x0000000000414000-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:

47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.execmd.exereg.execsrsll.execsrsll.execsrsll.exe47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe
Token: SeDebugPrivilege	1000	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.execsrsll.execsrsll.exe

pid	Process
4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe
1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe
516	csrsll.exe
1000	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 4780 wrote to memory of 1744	4780	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	91
PID 1744 wrote to memory of 5012	1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	92
PID 1744 wrote to memory of 5012	1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	92
PID 1744 wrote to memory of 5012	1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	92
PID 5012 wrote to memory of 4352	5012	cmd.exe	95
PID 5012 wrote to memory of 4352	5012	cmd.exe	95
PID 5012 wrote to memory of 4352	5012	cmd.exe	95
PID 1744 wrote to memory of 516	1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	96
PID 1744 wrote to memory of 516	1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	96
PID 1744 wrote to memory of 516	1744	47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe	96
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 1000	516	csrsll.exe	99
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100
PID 516 wrote to memory of 3012	516	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe
"C:\Users\Admin\AppData\Local\Temp\47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Users\Admin\AppData\Local\Temp\47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe
  "C:\Users\Admin\AppData\Local\Temp\47c8c3af541350cd2b1535d44811b3b5fd570648a728fdcbfd8f425faf09d0eaN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LYKSK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5012
  - - 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:4352
- - 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:516
  - - 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:1000
  - - 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:3012

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\LYKSK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
cc920d102252819b56ba0d76187b7505

SHA1
913542a7fbe4e193a0e606915f98c8ece1602650

SHA256
28a7c716fa92bf7f6e23a53e9c31222c56bf4cc63bd687830f53b8a9a37f0d36

SHA512
7045e0bb96bbe734b7e918b267e65ffa1c60ed7d8f70f83967d91e7ae021acd62aeb7a71d6f0b1cbdadc15a310693a51856b93a500495b624c5b8a328011f1ca

Download Submit
memory/516-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/516-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/516-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1000-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1744-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3012-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4780-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4780-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4780-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4780-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4780-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4780-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download