modiloader | 36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0af

General

Target

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
Size

338KB
MD5

f391e26274dc781ed0da826493ecb750
SHA1

ad8e59105f9737c5e7c241e0ea322fe2b09eca04
SHA256

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0af
SHA512

957a952ce39e501f214c2837d70d8f1607f517a84364bd73819d21381c826a9d336f44f187269f43f086ea479fb6c18eb297e7c62646895b55a0ef076d62e6d3
SSDEEP

3072:bc3sBG7mXh7m/zZM3jAbNOM6CNtDCZFc/:w3sBz0Z4Mj72F

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

Processes:

resource	yara_rule
behavioral1/memory/151896-147861-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

11052 csrsll.exe
151828 csrsll.exe
151896 csrsll.exe

pid	process
11052	csrsll.exe
151828	csrsll.exe
151896	csrsll.exe

Loads dropped DLL 5 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe

pid	process
10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execsrsll.exe

description	pid	process	target process
PID 2476 set thread context of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 11052 set thread context of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 set thread context of 151896	11052	csrsll.exe	csrsll.exe

UPX packed file 17 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2476-0-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/2476-23440-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/10816-73922-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/10816-73925-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2476-73927-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/10816-73926-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/10816-73920-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/10816-73928-0x0000000000400000-0x000000000040B000-memory.dmp	upx
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral1/memory/10816-73967-0x0000000002480000-0x00000000024D7000-memory.dmp	upx
behavioral1/memory/11052-73973-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/151896-147844-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/10816-106646-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/11052-147852-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/10816-147857-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/151828-147860-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/151896-147861-0x0000000000400000-0x0000000000414000-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:

csrsll.execsrsll.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execmd.exereg.execsrsll.exe

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	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.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 29 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe
Token: SeDebugPrivilege	151828	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execsrsll.execsrsll.exe

pid	process
2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
11052	csrsll.exe
151828	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execmd.execsrsll.exe

description	pid	process	target process
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2476 wrote to memory of 10816	2476	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 10816 wrote to memory of 10964	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 10816 wrote to memory of 10964	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 10816 wrote to memory of 10964	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 10816 wrote to memory of 10964	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 10964 wrote to memory of 11016	10964	cmd.exe	reg.exe
PID 10964 wrote to memory of 11016	10964	cmd.exe	reg.exe
PID 10964 wrote to memory of 11016	10964	cmd.exe	reg.exe
PID 10964 wrote to memory of 11016	10964	cmd.exe	reg.exe
PID 10816 wrote to memory of 11052	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 10816 wrote to memory of 11052	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 10816 wrote to memory of 11052	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 10816 wrote to memory of 11052	10816	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151828	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe
PID 11052 wrote to memory of 151896	11052	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
"C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
  "C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:10816
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\EWOKF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:10964
  - - 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:11016
- - 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:11052
  - - 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:151828
  - - 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:151896

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
338KB

MD5
fcafcbd25e4fc4b1bf095f1e1ec30ebb

SHA1
f1491ab7967a9b0020bda1d794a885725a351a10

SHA256
97938ebc2d7f35dec4a3f7bb4cab97baa049de47d5eb50bde48e90f7b9c63774

SHA512
f25843acff34a8e56b149f0c8cbdea5f3b0b72509c5f29838cf4de275f0182652257743d80c34c50376f20a553c43dadfa8c16e64774b3bde03c6d96d27c7266

Download Submit
memory/2476-73927-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2476-3-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2476-74-0x0000000000405000-0x0000000000406000-memory.dmp

Filesize
4KB

Download
memory/2476-23440-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2476-73917-0x00000000027B0000-0x0000000002807000-memory.dmp

Filesize
348KB

Download
memory/2476-0-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/10816-73925-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73970-0x0000000002490000-0x00000000024E7000-memory.dmp

Filesize
348KB

Download
memory/10816-73924-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/10816-73920-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73928-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73922-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73918-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73967-0x0000000002480000-0x00000000024D7000-memory.dmp

Filesize
348KB

Download
memory/10816-73968-0x0000000002490000-0x00000000024E7000-memory.dmp

Filesize
348KB

Download
memory/10816-147857-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73971-0x0000000002480000-0x00000000024D7000-memory.dmp

Filesize
348KB

Download
memory/10816-73926-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10816-73969-0x0000000002490000-0x00000000024E7000-memory.dmp

Filesize
348KB

Download
memory/10816-147849-0x0000000002480000-0x00000000024D7000-memory.dmp

Filesize
348KB

Download
memory/10816-147847-0x0000000002490000-0x00000000024E7000-memory.dmp

Filesize
348KB

Download
memory/10816-147846-0x0000000002490000-0x00000000024E7000-memory.dmp

Filesize
348KB

Download
memory/10816-147845-0x0000000002490000-0x00000000024E7000-memory.dmp

Filesize
348KB

Download
memory/10816-106646-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/11052-147852-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/11052-73973-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/151828-147860-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/151896-147844-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/151896-147861-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads