modiloader | b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69

Analysis

max time kernel
150s
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
28-12-2024 02:02

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General

Target

b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe
Size

90KB
MD5

20a27b3fe2eb702cb4d040fa4ac2f2d2
SHA1

196971f963b4026a07a2603da6ffe6f7d2ad330c
SHA256

b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69
SHA512

00d7bbb932f75912ef77489c0dd51ab89acb0be3cbd8dad05ec1836904c08b8df9a6b5242306357610fc9bc23f32f725cd1f1949fa4f001901651d2e682a7655
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDC:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3I

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/1304-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1304-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1304-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1304-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe

Executes dropped EXE 3 IoCs

pid	Process
4332	csrsll.exe
3316	csrsll.exe
1304	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-1-5-21-3227495264-2217614367-4027411560-1000\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 4956 set thread context of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4332 set thread context of 3316	4332	csrsll.exe	88
PID 4332 set thread context of 1304	4332	csrsll.exe	89

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4956-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2616-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4956-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2616-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2616-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2616-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000c000000023b7b-29.dat	upx
behavioral2/memory/2616-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4332-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4332-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1304-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4332-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1304-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2616-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3316-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1304-62-0x0000000000400000-0x0000000000414000-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	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe
Token: SeDebugPrivilege	3316	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe
2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe
4332	csrsll.exe
3316	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 4956 wrote to memory of 2616	4956	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	82
PID 2616 wrote to memory of 3948	2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	83
PID 2616 wrote to memory of 3948	2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	83
PID 2616 wrote to memory of 3948	2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	83
PID 3948 wrote to memory of 2396	3948	cmd.exe	86
PID 3948 wrote to memory of 2396	3948	cmd.exe	86
PID 3948 wrote to memory of 2396	3948	cmd.exe	86
PID 2616 wrote to memory of 4332	2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	87
PID 2616 wrote to memory of 4332	2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	87
PID 2616 wrote to memory of 4332	2616	b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe	87
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 3316	4332	csrsll.exe	88
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89
PID 4332 wrote to memory of 1304	4332	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe
"C:\Users\Admin\AppData\Local\Temp\b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Users\Admin\AppData\Local\Temp\b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe
  "C:\Users\Admin\AppData\Local\Temp\b850dc144928e5ecf3a5baee231a3467763099e81965a9372fa4eed07e41cb69.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CWAXL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3948
  - - 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:2396
- - 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:4332
  - - 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:3316
  - - 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:1304

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\CWAXL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f4785a1b9b0d1c712d196fc6412c8dcb

SHA1
fa1550ac37c952ff61947a760c3ccefb7f2336a6

SHA256
5649e20f5f59edbec7f58b9b2e13767d285020500630855db28fd01ab58df089

SHA512
0efb576ba3bf8f7968832960bf28101dc6c5ccc841319c8454dda0c08d02fb472d9f47d92b6984305523f83d91cfbe26bcf64d075b17c2c3fc90ba5d0284d3da

Download Submit
memory/1304-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2616-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2616-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2616-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2616-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2616-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2616-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3316-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4332-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4332-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4332-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4956-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4956-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4956-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads