modiloader | 3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 05:34

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General

Target

3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe
Size

90KB
MD5

4b1ddc650a91be0547dfba352bb08b67
SHA1

f9d3b7a83ff2d8524144ea452d612e8d5dacac51
SHA256

3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710
SHA512

d63e9a3bc0e4efb10da86cd02e1077b0f62b480ff2e39d9f04084d4dc6cba6f933b766d3ddbc8e87a60806d0ee087a7ca3f0700e29dbc2a5b43099adab5fd0ed
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDl:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3v

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/4860-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4860-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4860-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4860-63-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe

Executes dropped EXE 3 IoCs

pid	Process
1116	csrsll.exe
4512	csrsll.exe
4860	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-1-5-21-940901362-3608833189-1915618603-1000\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 536 set thread context of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 1116 set thread context of 4512	1116	csrsll.exe	101
PID 1116 set thread context of 4860	1116	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/536-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/536-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1420-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1420-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1420-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/536-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cc0-30.dat	upx
behavioral2/memory/1420-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1116-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1116-45-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4860-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4860-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4860-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4860-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4860-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1116-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1420-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4512-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4860-63-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.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	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe
Token: SeDebugPrivilege	4512	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe
1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe
1116	csrsll.exe
4512	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 536 wrote to memory of 1420	536	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	88
PID 1420 wrote to memory of 1088	1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	89
PID 1420 wrote to memory of 1088	1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	89
PID 1420 wrote to memory of 1088	1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	89
PID 1088 wrote to memory of 1080	1088	cmd.exe	93
PID 1088 wrote to memory of 1080	1088	cmd.exe	93
PID 1088 wrote to memory of 1080	1088	cmd.exe	93
PID 1420 wrote to memory of 1116	1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	94
PID 1420 wrote to memory of 1116	1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	94
PID 1420 wrote to memory of 1116	1420	3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe	94
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4512	1116	csrsll.exe	101
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102
PID 1116 wrote to memory of 4860	1116	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe
"C:\Users\Admin\AppData\Local\Temp\3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:536
- C:\Users\Admin\AppData\Local\Temp\3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe
  "C:\Users\Admin\AppData\Local\Temp\3ffd9f0fed6e2dcb676ad8069bf37f89f69d5c6ef021f06ab3872afba58f1710.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1420
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AOERN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1088
  - - 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:1080
- - 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:1116
  - - 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:4512
  - - 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:4860

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\AOERN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f0e932651122ec61e43304c3aaad408d

SHA1
f6a0d1ddfe66a4402b52e3a80675c64d0150d241

SHA256
853033fb34493fd6953cd46c75a96ef460eb266a9d9105a0c96c3b8aae4aa5e2

SHA512
4c2c33c7c333308e35ade4f947cebe66e780e540c69156f95268df4d6936fc315413c96d0bc6fbdcad3e169b8d11225c9a0bac6b84f34ada021b7e4457cf1dbd

Download Submit
memory/536-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/536-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/536-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/536-7-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/536-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/536-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/536-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1116-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1116-45-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1116-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1420-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1420-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1420-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1420-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1420-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1420-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4512-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4860-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4860-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4860-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4860-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4860-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4860-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads