modiloader | 388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5

Analysis

max time kernel
120s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 06:51

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General

Target

388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe
Size

90KB
MD5

e4c64bb23f224f2056e5626b29cbefd9
SHA1

9f6b7601465cdf63eeeca033b78400e12526804e
SHA256

388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5
SHA512

a9f43fad2fbbda78ac2699f2c8cfc6ac0c0e7116efe01b26b33a196a9c456c3ed9acc794bcc1235ee716b075b7110048804e189eb33ac154bf38bec6ebc10a44
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDd:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3H

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/1496-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1496-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1496-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1496-63-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe

Executes dropped EXE 3 IoCs

pid	Process
3412	csrsll.exe
740	csrsll.exe
1496	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-1-5-21-1045960512-3948844814-3059691613-1000\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 2068 set thread context of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 3412 set thread context of 740	3412	csrsll.exe	102
PID 3412 set thread context of 1496	3412	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2068-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2068-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5020-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5020-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2068-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5020-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c88-30.dat	upx
behavioral2/memory/5020-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1496-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3412-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3412-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1496-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1496-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1496-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3412-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5020-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1496-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/740-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1496-63-0x0000000000400000-0x0000000000414000-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	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	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe
5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe
3412	csrsll.exe
740	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 2068 wrote to memory of 5020	2068	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	89
PID 5020 wrote to memory of 4028	5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	90
PID 5020 wrote to memory of 4028	5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	90
PID 5020 wrote to memory of 4028	5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	90
PID 4028 wrote to memory of 4124	4028	cmd.exe	94
PID 4028 wrote to memory of 4124	4028	cmd.exe	94
PID 4028 wrote to memory of 4124	4028	cmd.exe	94
PID 5020 wrote to memory of 3412	5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	95
PID 5020 wrote to memory of 3412	5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	95
PID 5020 wrote to memory of 3412	5020	388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe	95
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 740	3412	csrsll.exe	102
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103
PID 3412 wrote to memory of 1496	3412	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe
"C:\Users\Admin\AppData\Local\Temp\388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe
  "C:\Users\Admin\AppData\Local\Temp\388205c1b075554005c54cdc4c6950f8ccf46bc4057a1b06165c7b4afc9712e5.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FXWTU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4028
  - - 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:4124
- - 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:3412
  - - 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:740
  - - 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:1496

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\FXWTU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b78a3a4b01e84f220f8f3f2eb088a3e4

SHA1
4ff136edc81dd6c7e677656a4c2a4e6db28530a3

SHA256
6dc834838f344537946ce5ada8995d7c6970a994eea005af61f9229bfc539c73

SHA512
d7baab1131179f47c31924025d4d0a096ce9c4bfdfcf45a074995c6b72e838d383d438cbe5f24707baaab3c7bfe99c2cc28dcbd33e820a8c7f1801a1ddbf0cc3

Download Submit
memory/740-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1496-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1496-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2068-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2068-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2068-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2068-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2068-7-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/2068-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2068-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/3412-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3412-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3412-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5020-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5020-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5020-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/5020-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5020-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5020-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads