modiloader | 37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2024 20:34

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General

Target

37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe
Size

90KB
MD5

663aef77287fe7c6a2b6d91b6e03825a
SHA1

72ffdf386392292c71d1efd98951616672c6a2fd
SHA256

37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d
SHA512

4e670edcb42dbd284b7fc0b692e68d93870d60607964e3d3e0ca8e162340fa22ddfaebf2098db2e8ba11a43d730eadd8345b4c98d5cfc5fc3b6b88a72ea31cde
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/4412-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe

Executes dropped EXE 3 IoCs

pid	Process
4856	csrsll.exe
5044	csrsll.exe
4412	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-1-5-21-2718105630-359604950-2820636825-1000\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 216 set thread context of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 4856 set thread context of 5044	4856	csrsll.exe	92
PID 4856 set thread context of 4412	4856	csrsll.exe	93

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/216-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/216-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2912-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2912-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/216-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2912-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023426-29.dat	upx
behavioral2/memory/4856-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2912-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4856-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4856-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4412-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4412-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4412-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4412-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4856-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4412-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2912-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5044-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4412-63-0x0000000000400000-0x0000000000414000-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	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.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	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe
2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe
4856	csrsll.exe
5044	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 216 wrote to memory of 2912	216	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	82
PID 2912 wrote to memory of 3988	2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	83
PID 2912 wrote to memory of 3988	2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	83
PID 2912 wrote to memory of 3988	2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	83
PID 3988 wrote to memory of 3376	3988	cmd.exe	86
PID 3988 wrote to memory of 3376	3988	cmd.exe	86
PID 3988 wrote to memory of 3376	3988	cmd.exe	86
PID 2912 wrote to memory of 4856	2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	87
PID 2912 wrote to memory of 4856	2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	87
PID 2912 wrote to memory of 4856	2912	37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe	87
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 5044	4856	csrsll.exe	92
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93
PID 4856 wrote to memory of 4412	4856	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe
"C:\Users\Admin\AppData\Local\Temp\37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:216
- C:\Users\Admin\AppData\Local\Temp\37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe
  "C:\Users\Admin\AppData\Local\Temp\37c245c9a3acb75e56df09c6e6d508e47a3af781d93b3e69010067ba8283c51d.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2912
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IXYVE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3988
  - - 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:3376
- - 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:4856
  - - 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:5044
  - - 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:4412

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\IXYVE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
3d9198c66a99fe408aeb9641bfb3a449

SHA1
c3be8e2cc3afbecf66ca924ea12b4e7cbaa717c3

SHA256
0625b0880f9a2b9bf77c0012b9215e9175bb645073e2ccffadc1e73a386d3625

SHA512
84955d0fbf67c05735fbf276964433dd4d5acd0a4237d43fb12e2ee6081f220ef98432249b451890742b6070c14f1b81571d2ab5df0eb895f2ffe6eeaf8319d4

Download Submit
memory/216-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/216-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/216-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/216-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/216-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/216-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2912-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2912-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2912-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2912-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2912-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2912-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4412-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4412-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4856-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4856-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4856-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5044-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads