modiloader | f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 04:13

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General

Target

f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
Size

90KB
MD5

64709d9fc11d5ef95aa12a88581baf5e
SHA1

cc3b45357b755c5c6deba2476f9a61c0b424882f
SHA256

f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63
SHA512

bc7cc097d80b5b2184147960822efa18cb6123a095045923918fa2aedf09f70b2ee063627bd815b2a71721df510fca907d0b90a2758204401ee9ddb26522ec4a
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDC:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE34

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/3580-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3580-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3580-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3580-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe

Executes dropped EXE 3 IoCs

pid	Process
4320	csrsll.exe
5012	csrsll.exe
3580	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 4320 set thread context of 5012	4320	csrsll.exe	93
PID 4320 set thread context of 3580	4320	csrsll.exe	94

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2784-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/536-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2784-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/536-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/536-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2784-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b63-29.dat	upx
behavioral2/memory/4320-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/536-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4320-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4320-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/536-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3580-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3580-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3580-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3580-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3580-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5012-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3580-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe
Token: SeDebugPrivilege	5012	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
4320	csrsll.exe
5012	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 2784 wrote to memory of 536	2784	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	82
PID 536 wrote to memory of 3488	536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	83
PID 536 wrote to memory of 3488	536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	83
PID 536 wrote to memory of 3488	536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	83
PID 3488 wrote to memory of 4528	3488	cmd.exe	86
PID 3488 wrote to memory of 4528	3488	cmd.exe	86
PID 3488 wrote to memory of 4528	3488	cmd.exe	86
PID 536 wrote to memory of 4320	536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	87
PID 536 wrote to memory of 4320	536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	87
PID 536 wrote to memory of 4320	536	f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe	87
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 5012	4320	csrsll.exe	93
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94
PID 4320 wrote to memory of 3580	4320	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
"C:\Users\Admin\AppData\Local\Temp\f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Local\Temp\f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe
  "C:\Users\Admin\AppData\Local\Temp\f2b870dacb9727ba0186d884026aee742a116fd8f665a54e9c9be6f1bbebcd63.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:536
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DLCUM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3488
  - - 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:4528
- - 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:4320
  - - 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:5012
  - - 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:3580

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\DLCUM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f3259dfc31b55c179178fc33f87917cb

SHA1
3dfe428a60008f78771e4eeec23912a438491264

SHA256
97986a85142551bff345b67630c4320132aa2d4cc1bd8c6ece39ded550b54f55

SHA512
759cfb3a1642d1e7ab696ab1c179d84d1b463ba4ecca11276d5730f54011975e64d6b6a70b273f692b21ccf04f1681185295cc9c2496ec930cc1bd701920aa5a

Download Submit
memory/536-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/536-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/536-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/536-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/536-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2784-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2784-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2784-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2784-4-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/2784-3-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/2784-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/3580-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3580-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3580-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3580-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3580-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3580-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4320-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4320-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4320-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5012-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads