modiloader | f2863bf26d5a3f934d4e3018a62e8bc3159e35799b1a61ffa8509219f23493c4

Analysis

max time kernel
119s
max time network
16s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
14/08/2024, 04:19

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General

Target

161b9c56dd8fe3729a08f1e7a2beafd0N.exe
Size

90KB
MD5

161b9c56dd8fe3729a08f1e7a2beafd0
SHA1

c43328639017df819f1f31497d9d32645c93d57b
SHA256

f2863bf26d5a3f934d4e3018a62e8bc3159e35799b1a61ffa8509219f23493c4
SHA512

708059d40150841bccbadd0eaf865a0947b1ba9d711d4cec9a84b6f6f4582db93a2c80d1c4a417e3607abdcba109942f7938acf880962893661617fdabaef163
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 Second Stage 1 IoCs

resource	yara_rule
behavioral1/memory/2164-257-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
2084	csrsll.exe
1080	csrsll.exe
2164	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe

UPX packed file 17 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2760-88-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2492-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2492-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2492-99-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2492-97-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2492-93-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2492-91-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2760-105-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/files/0x000e00000001224d-130.dat	upx
behavioral1/memory/2492-144-0x0000000003460000-0x00000000034B3000-memory.dmp	upx
behavioral1/memory/2084-216-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2164-241-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2084-243-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2492-250-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1080-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2164-257-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-1385883288-3042840365-2734249351-1000\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 2760 set thread context of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2084 set thread context of 1080	2084	csrsll.exe	35
PID 2084 set thread context of 2164	2084	csrsll.exe	36

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	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe
Token: SeDebugPrivilege	1080	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe
2084	csrsll.exe
1080	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2760 wrote to memory of 2492	2760	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	30
PID 2492 wrote to memory of 2796	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	31
PID 2492 wrote to memory of 2796	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	31
PID 2492 wrote to memory of 2796	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	31
PID 2492 wrote to memory of 2796	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	31
PID 2796 wrote to memory of 2944	2796	cmd.exe	33
PID 2796 wrote to memory of 2944	2796	cmd.exe	33
PID 2796 wrote to memory of 2944	2796	cmd.exe	33
PID 2796 wrote to memory of 2944	2796	cmd.exe	33
PID 2492 wrote to memory of 2084	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	34
PID 2492 wrote to memory of 2084	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	34
PID 2492 wrote to memory of 2084	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	34
PID 2492 wrote to memory of 2084	2492	161b9c56dd8fe3729a08f1e7a2beafd0N.exe	34
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 1080	2084	csrsll.exe	35
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36
PID 2084 wrote to memory of 2164	2084	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe
"C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe
  "C:\Users\Admin\AppData\Local\Temp\161b9c56dd8fe3729a08f1e7a2beafd0N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\OCDYU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2796
  - - 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:2944
- - 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:2084
  - - 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:1080
  - - 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:2164

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\OCDYU.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
3edc4f6ebd093a166354a9fa2fab31e1

SHA1
303fcb4d10da3de60d63f29260737b46d76bab91

SHA256
ec72c6bcfd8acaa819b860739339c7ac09c772366201384aa4a9032ab132abd3

SHA512
8650e356fb685321d1ff29ac981bd7b008f02c9134eb1a8a6a25e7f3d3c03ff2719cb4601bfac3148c6d77bc28e9eb24431871b4398eff27022bccd14ed80917

Download Submit
memory/1080-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2084-243-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-216-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-162-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2084-173-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2084-152-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2164-257-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2164-241-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2492-145-0x0000000003460000-0x00000000034B3000-memory.dmp

Filesize
332KB

Download
memory/2492-146-0x0000000003460000-0x00000000034B3000-memory.dmp

Filesize
332KB

Download
memory/2492-250-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-99-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-97-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-95-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2492-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-89-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2492-144-0x0000000003460000-0x00000000034B3000-memory.dmp

Filesize
332KB

Download
memory/2492-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2760-40-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2760-88-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2760-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2760-105-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2760-70-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2760-60-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/2760-78-0x0000000000590000-0x0000000000592000-memory.dmp

Filesize
8KB

Download
memory/2760-28-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2760-18-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2760-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2760-102-0x0000000002540000-0x0000000002593000-memory.dmp

Filesize
332KB

Download
memory/2760-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2760-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads