modiloader | c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 12:16

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General

Target

c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
Size

338KB
MD5

563dc5975e261789895fed97482b43ab
SHA1

733c8ebc3b82a42ec9b5184ec70cc877760cfecb
SHA256

c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11
SHA512

05a59f4493856263afb09694b371bc38b12130acb15e57a44103a4d4d34c7ef00fb5f50010504ca48b0d5a29468696560f0446e85c5bc16ea0049d27020561a4
SSDEEP

3072:bc3sBG7mXh7m/zZM3jAbNOM6CNtDCZFc/H:w3sBz0Z4Mj72Fg

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/56832-147855-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
3188	csrsll.exe
56772	csrsll.exe
56832	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.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-1-5-21-2703099537-420551529-3771253338-1000\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 1520 set thread context of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 3188 set thread context of 56772	3188	csrsll.exe	35
PID 3188 set thread context of 56832	3188	csrsll.exe	36

UPX packed file 16 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1520-0-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/2524-73928-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2524-73927-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1520-73926-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/2524-73925-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2524-73923-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2524-73920-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2524-73918-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x00090000000120fe-73953.dat	upx
behavioral1/memory/2524-73967-0x00000000033A0000-0x00000000033F7000-memory.dmp	upx
behavioral1/memory/2524-147845-0x00000000033A0000-0x00000000033F7000-memory.dmp	upx
behavioral1/memory/56832-147844-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2524-147843-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/3188-147846-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral1/memory/2524-147852-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/56832-147855-0x0000000000400000-0x0000000000414000-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	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 56 IoCs

description	pid	Process
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe
Token: SeDebugPrivilege	56772	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
3188	csrsll.exe
56772	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 1520 wrote to memory of 2524	1520	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	30
PID 2524 wrote to memory of 3112	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	31
PID 2524 wrote to memory of 3112	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	31
PID 2524 wrote to memory of 3112	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	31
PID 2524 wrote to memory of 3112	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	31
PID 3112 wrote to memory of 3164	3112	cmd.exe	33
PID 3112 wrote to memory of 3164	3112	cmd.exe	33
PID 3112 wrote to memory of 3164	3112	cmd.exe	33
PID 3112 wrote to memory of 3164	3112	cmd.exe	33
PID 2524 wrote to memory of 3188	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	34
PID 2524 wrote to memory of 3188	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	34
PID 2524 wrote to memory of 3188	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	34
PID 2524 wrote to memory of 3188	2524	c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe	34
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56772	3188	csrsll.exe	35
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36
PID 3188 wrote to memory of 56832	3188	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
"C:\Users\Admin\AppData\Local\Temp\c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Users\Admin\AppData\Local\Temp\c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe
  "C:\Users\Admin\AppData\Local\Temp\c61bd926d17a408a738b79ed3761ac6dddc35fa5f50794a7a59e2eaaf8dc4b11.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\REIEC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3112
  - - 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:3164
- - 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:3188
  - - 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:56772
  - - 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:56832

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
338KB

MD5
e9617608f9a97729b28542179db90354

SHA1
56e2aa20890fa108d61b78c087176afcd9c41737

SHA256
c95f8209bae4b8286b0a271eb1049775c23ba32cb8c9d9e6d820702d3e93d639

SHA512
0b190c618eac2da965e0ebf6da4d88d9ce026160ece4bcb71cae7b9dc2f0fff55255447f8958048b0f0f18234ed637f721b8597fb86f2f497b4b13d313146606

Download Submit
memory/1520-73924-0x0000000002540000-0x0000000002597000-memory.dmp

Filesize
348KB

Download
memory/1520-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1520-68-0x0000000000405000-0x0000000000406000-memory.dmp

Filesize
4KB

Download
memory/1520-73926-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1520-0-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2524-73916-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73970-0x00000000033A0000-0x00000000033F7000-memory.dmp

Filesize
348KB

Download
memory/2524-73922-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2524-73920-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73918-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73925-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73927-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73928-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73971-0x00000000033A0000-0x00000000033F7000-memory.dmp

Filesize
348KB

Download
memory/2524-73923-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-73969-0x00000000033A0000-0x00000000033F7000-memory.dmp

Filesize
348KB

Download
memory/2524-73968-0x00000000033A0000-0x00000000033F7000-memory.dmp

Filesize
348KB

Download
memory/2524-73967-0x00000000033A0000-0x00000000033F7000-memory.dmp

Filesize
348KB

Download
memory/2524-147845-0x00000000033A0000-0x00000000033F7000-memory.dmp

Filesize
348KB

Download
memory/2524-147852-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2524-147843-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3188-147846-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/56832-147844-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/56832-147855-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads