modiloader | b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76

General

Target

b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
Size

90KB
MD5

937fd7282a0d4151e7b366908b9422af
SHA1

5f3d9e0812e86dc3193c456e36c3ed78c34e614a
SHA256

b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76
SHA512

dc48b6ffef06a5206ad56f0e6835cf7e941ec1f6a7ad86b920b3c920b1117af1e1637fdbf49e89b80c54b29eff6f8d0dbc0d08eda7fccbd1b4b4f8f2d7efec03
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDT: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

Processes:

resource	yara_rule
behavioral2/memory/1852-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1852-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1852-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1852-61-0x0000000000400000-0x0000000000414000-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

Processes:

b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

4420 csrsll.exe
2788 csrsll.exe
1852 csrsll.exe

pid	process
4420	csrsll.exe
2788	csrsll.exe
1852	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

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

Processes:

b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.execsrsll.exe

description	pid	process	target process
PID 3156 set thread context of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 4420 set thread context of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 set thread context of 1852	4420	csrsll.exe	csrsll.exe

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3156-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3156-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/956-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/956-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3156-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/956-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/956-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4420-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4420-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1852-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1852-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1852-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1852-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1852-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4420-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/956-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2788-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1852-61-0x0000000000400000-0x0000000000414000-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

Processes:

reg.execsrsll.execsrsll.execsrsll.exeb34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exeb34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.execmd.exe

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	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe
Token: SeDebugPrivilege	2788	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exeb34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.execsrsll.execsrsll.exe

pid	process
3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
4420	csrsll.exe
2788	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exeb34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.execmd.execsrsll.exe

description	pid	process	target process
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 3156 wrote to memory of 956	3156	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
PID 956 wrote to memory of 644	956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	cmd.exe
PID 956 wrote to memory of 644	956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	cmd.exe
PID 956 wrote to memory of 644	956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	cmd.exe
PID 644 wrote to memory of 4004	644	cmd.exe	reg.exe
PID 644 wrote to memory of 4004	644	cmd.exe	reg.exe
PID 644 wrote to memory of 4004	644	cmd.exe	reg.exe
PID 956 wrote to memory of 4420	956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	csrsll.exe
PID 956 wrote to memory of 4420	956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	csrsll.exe
PID 956 wrote to memory of 4420	956	b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 2788	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe
PID 4420 wrote to memory of 1852	4420	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
"C:\Users\Admin\AppData\Local\Temp\b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Users\Admin\AppData\Local\Temp\b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe
  "C:\Users\Admin\AppData\Local\Temp\b34310583a5678cf598363b48cbb9e0427e3af4097089de4e845a065ee64ae76.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:956
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YMYKI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:644
  - - 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:4004
- - 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:4420
  - - 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:2788
  - - 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:1852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\YMYKI.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
ddd064340f4e07cdbb07430bd4e163a4

SHA1
71cd8dabe624de0f3707d145a8baefcca64540b4

SHA256
c471e9276f35bfc393f7fd9980de801009ffa0f7ad0fc9ee72d6edb33758eef3

SHA512
37968e688cbed8990dbba0f6058003a840464648593dc31b538c574e333256749b642e626660396274918dbc905bebd4ce1b394e49ce151137141a2d9cbfa635

Download Submit
memory/956-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/956-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/956-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/956-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/956-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/956-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1852-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1852-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1852-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1852-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1852-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1852-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2788-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3156-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3156-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3156-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/3156-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/3156-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/3156-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4420-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4420-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4420-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads