modiloader | d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f

Analysis

max time kernel
119s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 22:59

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General

Target

d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
Size

90KB
MD5

3d7b5947c237970c25e6eba6ce28d489
SHA1

d20dd4df3f28ca133c4c1504269051fa8376f090
SHA256

d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f
SHA512

ac8a98f6f2fd62d6c3100ad64e1136be5a67699d3f4a82d1f801659e02f1202272088657e73478003029100db50f31796c782e078a8d8623581f6253b0815524
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDU:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3q

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 1 IoCs

resource	yara_rule
behavioral1/memory/1520-261-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1924	csrsll.exe
896	csrsll.exe
1520	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.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-1-5-21-1488793075-819845221-1497111674-1000\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 1780 set thread context of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1924 set thread context of 896	1924	csrsll.exe	34
PID 1924 set thread context of 1520	1924	csrsll.exe	35

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1780-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1780-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1780-95-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/320-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/320-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/320-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1780-100-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/320-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/320-93-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/320-91-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/320-133-0x0000000003240000-0x0000000003293000-memory.dmp	upx
behavioral1/files/0x0006000000010300-135.dat	upx
behavioral1/memory/320-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1924-217-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1924-252-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1520-251-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/320-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/896-260-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1520-261-0x0000000000400000-0x0000000000414000-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	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	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe
Token: SeDebugPrivilege	896	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
1924	csrsll.exe
896	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 1780 wrote to memory of 320	1780	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	29
PID 320 wrote to memory of 1900	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	30
PID 320 wrote to memory of 1900	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	30
PID 320 wrote to memory of 1900	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	30
PID 320 wrote to memory of 1900	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	30
PID 1900 wrote to memory of 1880	1900	cmd.exe	32
PID 1900 wrote to memory of 1880	1900	cmd.exe	32
PID 1900 wrote to memory of 1880	1900	cmd.exe	32
PID 1900 wrote to memory of 1880	1900	cmd.exe	32
PID 320 wrote to memory of 1924	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	33
PID 320 wrote to memory of 1924	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	33
PID 320 wrote to memory of 1924	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	33
PID 320 wrote to memory of 1924	320	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	33
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 896	1924	csrsll.exe	34
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35
PID 1924 wrote to memory of 1520	1924	csrsll.exe	35

C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
"C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
  "C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:320
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\LKXEO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1900
  - - 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:1880
- - 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:1924
  - - 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:896
  - - 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:1520

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\LKXEO.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
afac5193617a91de1e6b936ea73ee0c9

SHA1
611cfa2f150b69221673f35133b0e25c090247d6

SHA256
8806e3209ff33701df3a9687d014818ee486c6fbfe559c6076599e7f85aa4645

SHA512
a736e2fa0f72b00db98a558a6bdf4cfae5f10ac5de762b46031a8162caaa58f4dbc77433115bc215681f003fc6df0c192cce19d1238cd5ed81e8dea909114380

Download Submit
memory/320-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/320-148-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-210-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-212-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-215-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-216-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-147-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-133-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-89-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-146-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-149-0x0000000003240000-0x0000000003293000-memory.dmp

Filesize
332KB

Download
memory/320-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/320-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/896-260-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1520-251-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1520-261-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1780-41-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1780-79-0x00000000003B0000-0x00000000003B2000-memory.dmp

Filesize
8KB

Download
memory/1780-104-0x00000000025D0000-0x0000000002623000-memory.dmp

Filesize
332KB

Download
memory/1780-95-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1780-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1780-61-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/1780-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1780-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1780-71-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1780-100-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1780-29-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1780-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1780-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1780-15-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1924-252-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1924-166-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1924-177-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1924-217-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1924-156-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads