modiloader | 8b7563bd2440c86b026181c0867d0f2604d98df02c379da360411443f3a65b16

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 10:28

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
4080b8a70da9f1a203e703a8a83061d0_NEAS.exe
Size 308KB
Sample240507-mh46vaeh22
SHA256 8b7563bd2440c86b026181c0867d0f2604d98df02c379da360411443f3a65b16
MD5 4080b8a70da9f1a203e703a8a83061d0
SHA1 b9c2612e24e7dc5eaf74760058da14657d064d3e
SHA512 f60649556f120fce0e570fd565602ab115267d77042346b20f30bb16a601e8a09ef2a1f49764f8a67240e282e5465f80cf5eafc318f0874dfc81a818209e04fa
SSDEEP 3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFL:E3sBz0Z4Mj72F
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader 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 4 IoCs

resource	yara_rule
behavioral2/memory/3156-47-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3156-49-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3156-45-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3156-56-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe

Executes dropped EXE 3 IoCs

pid	Process
3632	csrsll.exe
3676	csrsll.exe
3156	csrsll.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4172-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4172-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4172-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4172-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3156-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3156-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4172-54-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3156-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3156-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3156-39-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3676-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3156-56-0x0000000000400000-0x0000000000414000-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-1-5-21-2818691465-3043947619-2475182763-1000\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 4048 set thread context of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 3632 set thread context of 3676	3632	csrsll.exe	99
PID 3632 set thread context of 3156	3632	csrsll.exe	100

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe
4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe
3632	csrsll.exe
3676	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4048 wrote to memory of 4172	4048	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	89
PID 4172 wrote to memory of 2388	4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	92
PID 4172 wrote to memory of 2388	4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	92
PID 4172 wrote to memory of 2388	4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	92
PID 2388 wrote to memory of 2080	2388	cmd.exe	95
PID 2388 wrote to memory of 2080	2388	cmd.exe	95
PID 2388 wrote to memory of 2080	2388	cmd.exe	95
PID 4172 wrote to memory of 3632	4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	96
PID 4172 wrote to memory of 3632	4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	96
PID 4172 wrote to memory of 3632	4172	4080b8a70da9f1a203e703a8a83061d0_NEAS.exe	96
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3676	3632	csrsll.exe	99
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100
PID 3632 wrote to memory of 3156	3632	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\4080b8a70da9f1a203e703a8a83061d0_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\4080b8a70da9f1a203e703a8a83061d0_NEAS.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4048
- C:\Users\Admin\AppData\Local\Temp\4080b8a70da9f1a203e703a8a83061d0_NEAS.exe
  "C:\Users\Admin\AppData\Local\Temp\4080b8a70da9f1a203e703a8a83061d0_NEAS.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4172
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JFERH.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2388
  - - 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
      PID:2080
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3632
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3676
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      PID:3156

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

JFERH.txt

Path C:\Users\Admin\AppData\Local\Temp\JFERH.txt
Size 145B
SHA256 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff
MD5 4eb61ec7816c34ec8c125acadc57ec1b
SHA1 b0015cc865c0bb1a027be663027d3829401a31cc
SHA512 f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1
MD5 SHA1 SHA512

Submit Download

csrsll.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Size 308KB
SHA256 eeb6a2bfa7a379f127044dc4b6874967532f515e61aa7830e173460978678619
MD5 87f5becce14bfc21bd532610cdec9bdb
SHA1 ff954dfe2fa099a4504bc57ae80f3c346f483ca7
SHA512 b388fd1d3b50447042d4cbef8936facce0d91a9c2178e47aaf0bc573fb857cba74f5a40e7d6f57c290a8bb6cb5dde8021bcfec1b3864adb59d06b84aefad4e37
SSDEEP 3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFL:E3sBz0Z4Mj72F
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3156-56-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3156-39-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3156-44-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3156-45-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3156-49-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3156-47-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3632-36-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/3632-33-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/3632-48-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/3676-55-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/4048-0-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4048-4-0x00000000021E0000-0x00000000021E1000-memory.dmp

Download

memory/4048-3-0x00000000021C0000-0x00000000021C1000-memory.dmp

Download

memory/4172-11-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/4172-8-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/4172-54-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/4172-7-0x0000000000400000-0x000000000040B000-memory.dmp

Download

memory/4172-5-0x0000000000400000-0x000000000040B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads