modiloader | 1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 19:52

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General

Target

1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe
Size

90KB
MD5

aed3f2c28ddadd42a378a11f4482c017
SHA1

9c93b200546de9a70cbd3573e0e2ed9ee4c624d7
SHA256

1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268
SHA512

eab3e1a3adbda14a80c4a89dc321cba5a13946f03466e4537fc40e41c3f49364c617177eebdb29b97004f09f3df305f01105012fb451189ca7f64f18c2147f2c
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDF:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3j

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 4 IoCs

resource	yara_rule
behavioral2/memory/3800-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3800-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3800-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3800-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe

Executes dropped EXE 3 IoCs

pid	Process
452	csrsll.exe
4564	csrsll.exe
3800	csrsll.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-1-5-21-3227495264-2217614367-4027411560-1000\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 2236 set thread context of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 452 set thread context of 4564	452	csrsll.exe	95
PID 452 set thread context of 3800	452	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2236-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2236-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4464-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2236-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b7b-30.dat	upx
behavioral2/memory/4464-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/452-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/452-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3800-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3800-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3800-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3800-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3800-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/452-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4564-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3800-62-0x0000000000400000-0x0000000000414000-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	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe
Token: SeDebugPrivilege	4564	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe
4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe
452	csrsll.exe
4564	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 2236 wrote to memory of 4464	2236	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	86
PID 4464 wrote to memory of 4544	4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	87
PID 4464 wrote to memory of 4544	4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	87
PID 4464 wrote to memory of 4544	4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	87
PID 4544 wrote to memory of 1952	4544	cmd.exe	91
PID 4544 wrote to memory of 1952	4544	cmd.exe	91
PID 4544 wrote to memory of 1952	4544	cmd.exe	91
PID 4464 wrote to memory of 452	4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	92
PID 4464 wrote to memory of 452	4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	92
PID 4464 wrote to memory of 452	4464	1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe	92
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 4564	452	csrsll.exe	95
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96
PID 452 wrote to memory of 3800	452	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe
"C:\Users\Admin\AppData\Local\Temp\1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe
  "C:\Users\Admin\AppData\Local\Temp\1b34af0250acac0c800265a3806afb2b6a083741ef24529ca68c5e197eb54268.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4464
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YOKJW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4544
  - - 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:1952
- - 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:452
  - - 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:4564
  - - 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:3800

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\YOKJW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
720547f62bb6d956823b1ad1eee484f9

SHA1
bf062cd9eae3e41c598794302ab70da1f296599d

SHA256
e307334dab24fd298172807cb00df592c60ea20b2a5f462970ab0fd6e94a8587

SHA512
e795b2e4d4e74015913016d69e8fe4d86789400daec00e45c4264d276c0ddb701ecf596d4b2ae8a0a50972bac6c4a1606f45883726703ed39a5ff920051deb29

Download Submit
memory/452-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/452-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/452-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2236-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/2236-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2236-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2236-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2236-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2236-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3800-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3800-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3800-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3800-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3800-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3800-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4464-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4464-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4464-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4564-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads