modiloader | b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 02:31

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General

Target

b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe
Size

90KB
MD5

43d1d647eab32050d7cffa59863d37f0
SHA1

1bbfbe53288f1be8bbc9391311959e1dda260857
SHA256

b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370
SHA512

0c7261ca83191fc0b0e12f690a21ef49ecfa0bc590e6f718bf454fa3f45565ade057b54c649f0e4b31c68b46add19c44b68b9ec2944ca8a76438c49038162823
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 family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/2732-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2732-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2732-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2732-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe

Executes dropped EXE 3 IoCs

pid	Process
4184	csrsll.exe
3640	csrsll.exe
2732	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 264 set thread context of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 4184 set thread context of 3640	4184	csrsll.exe	95
PID 4184 set thread context of 2732	4184	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/264-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/264-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4844-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4844-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4844-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/264-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c9a-29.dat	upx
behavioral2/memory/4184-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4844-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4184-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4184-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2732-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2732-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2732-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2732-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2732-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4184-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4844-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3640-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2732-63-0x0000000000400000-0x0000000000414000-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	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.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	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe
Token: SeDebugPrivilege	3640	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe
4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe
4184	csrsll.exe
3640	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 264 wrote to memory of 4844	264	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	86
PID 4844 wrote to memory of 2716	4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	87
PID 4844 wrote to memory of 2716	4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	87
PID 4844 wrote to memory of 2716	4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	87
PID 2716 wrote to memory of 3464	2716	cmd.exe	90
PID 2716 wrote to memory of 3464	2716	cmd.exe	90
PID 2716 wrote to memory of 3464	2716	cmd.exe	90
PID 4844 wrote to memory of 4184	4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	92
PID 4844 wrote to memory of 4184	4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	92
PID 4844 wrote to memory of 4184	4844	b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe	92
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 3640	4184	csrsll.exe	95
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96
PID 4184 wrote to memory of 2732	4184	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe
"C:\Users\Admin\AppData\Local\Temp\b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:264
- C:\Users\Admin\AppData\Local\Temp\b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe
  "C:\Users\Admin\AppData\Local\Temp\b55cd6171f50af5929874fe1c983de80e4de8297c08ae2261150e6f06a021370N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4844
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QHGQO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - 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:3464
- - 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:4184
  - - 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:3640
  - - 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:2732

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\QHGQO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0eb1d6b59da88e62073b16aee1f0bde0

SHA1
c35a4934d85278ecc5232242d4ed84fec4f3f5df

SHA256
e07ac4262c1dbcca74e17c4fef73a4133f18f4923d47cfe8e433e8652fb58f78

SHA512
829ca7e7a18639a390d27870ec771a15b2c83e2aff33c24e25eb6a62dd5277a746efee126732d17d2cc87aabb2937710dc37fc7edabf2f422fae852000c771f9

Download Submit
memory/264-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/264-5-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/264-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/264-6-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/264-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/264-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/2732-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2732-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2732-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2732-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2732-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2732-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3640-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4184-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4184-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4184-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4184-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4844-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4844-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4844-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4844-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4844-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads