modiloader | 810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55

Analysis

max time kernel
120s
max time network
25s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
17/01/2025, 06:38

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General

Target

810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
Size

300KB
MD5

99e5c2b22d8b2145d9e4d30313271ef0
SHA1

6ad1cd05ca8917c3c29c89c6acb7d7689a701a53
SHA256

810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55
SHA512

7987554f55c8f063087ffcdfba9d5fe876e833496213047d592518e20878acf3310a183496628794c000d3e81bca2839eaa52982e75a161ad13bfd9bf80f782c
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38G1:UsxD5cwohO+O1sVG0/pZ6iPC8v

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/1392-251-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1152	csrsll.exe
820	csrsll.exe
1392	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2568 set thread context of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 1152 set thread context of 820	1152	csrsll.exe	36
PID 1152 set thread context of 1392	1152	csrsll.exe	37

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2692-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2692-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2692-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2692-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2692-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2692-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2692-146-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1392-241-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2692-245-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/820-250-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1392-251-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe
Token: SeDebugPrivilege	820	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
1152	csrsll.exe
820	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2568 wrote to memory of 2692	2568	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	30
PID 2692 wrote to memory of 1984	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	32
PID 2692 wrote to memory of 1984	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	32
PID 2692 wrote to memory of 1984	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	32
PID 2692 wrote to memory of 1984	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	32
PID 1984 wrote to memory of 1548	1984	cmd.exe	34
PID 1984 wrote to memory of 1548	1984	cmd.exe	34
PID 1984 wrote to memory of 1548	1984	cmd.exe	34
PID 1984 wrote to memory of 1548	1984	cmd.exe	34
PID 2692 wrote to memory of 1152	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	35
PID 2692 wrote to memory of 1152	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	35
PID 2692 wrote to memory of 1152	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	35
PID 2692 wrote to memory of 1152	2692	810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe	35
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 820	1152	csrsll.exe	36
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37
PID 1152 wrote to memory of 1392	1152	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
"C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe
  "C:\Users\Admin\AppData\Local\Temp\810b4a26e9bd2190847c6d18847b21795af698db3b84e873076ace7378471d55N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\CQLJY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1984
  - - 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:1548
- - 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:1152
  - - 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:820
  - - 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:1392

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\CQLJY.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
281e5998ce3de451e2294ec3fb9a05e2

SHA1
54e6a22e6328617b2e82a4544d75cd3f3106414d

SHA256
fd1715604416eb8d361385f46cf25d46c6384eae03c925ed4e26bd6e15b2ba2f

SHA512
1a090e685bc5fcc30d019746231269bf44cf7d3a25a976f940e7e2d7245d7ee83d60ec7fe9aa8e1325ddbb8b32b4378c69432f61e0708d5be14e8a3d12c2e3d8

Download Submit
memory/820-250-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1152-160-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1152-172-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1152-150-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1392-251-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1392-241-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2568-82-0x00000000003C0000-0x00000000003C2000-memory.dmp

Filesize
8KB

Download
memory/2568-79-0x00000000003B0000-0x00000000003B2000-memory.dmp

Filesize
8KB

Download
memory/2568-69-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download
memory/2568-89-0x00000000003E0000-0x00000000003E2000-memory.dmp

Filesize
8KB

Download
memory/2568-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2568-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2568-77-0x00000000003B0000-0x00000000003B2000-memory.dmp

Filesize
8KB

Download
memory/2568-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2568-27-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2568-39-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/2568-59-0x0000000000350000-0x0000000000351000-memory.dmp

Filesize
4KB

Download
memory/2568-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2692-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-146-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-245-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2692-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads