modiloader | 6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2024, 00:25

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General

Target

6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
Size

90KB
MD5

ba4007db10248e3024d529293829d1e0
SHA1

fb0e4158eede1071da1f1296765e40638d15651f
SHA256

6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618
SHA512

05e36b85e3a6257da9f81ef2d93a0d8537ef8410178707bda0fad0c04a4795dad06a9fa1b866c5caab37f53d3ef3734d6b2368de97a7887cdf7ccab22c53147a
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDI:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3C

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/532-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/532-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/532-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/532-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe

Executes dropped EXE 3 IoCs

pid	Process
3840	csrsll.exe
4408	csrsll.exe
532	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-1-5-21-4089630652-1596403869-279772308-1000\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 1296 set thread context of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 3840 set thread context of 4408	3840	csrsll.exe	95
PID 3840 set thread context of 532	3840	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1296-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3076-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1296-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3076-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3076-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1296-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b59-29.dat	upx
behavioral2/memory/3840-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3076-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3840-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/532-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/532-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/532-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/532-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/532-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3840-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3076-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4408-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/532-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe
Token: SeDebugPrivilege	4408	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
3840	csrsll.exe
4408	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 1296 wrote to memory of 3076	1296	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	86
PID 3076 wrote to memory of 2800	3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	87
PID 3076 wrote to memory of 2800	3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	87
PID 3076 wrote to memory of 2800	3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	87
PID 2800 wrote to memory of 4728	2800	cmd.exe	90
PID 2800 wrote to memory of 4728	2800	cmd.exe	90
PID 2800 wrote to memory of 4728	2800	cmd.exe	90
PID 3076 wrote to memory of 3840	3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	91
PID 3076 wrote to memory of 3840	3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	91
PID 3076 wrote to memory of 3840	3076	6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe	91
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 4408	3840	csrsll.exe	95
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96
PID 3840 wrote to memory of 532	3840	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
"C:\Users\Admin\AppData\Local\Temp\6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Users\Admin\AppData\Local\Temp\6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe
  "C:\Users\Admin\AppData\Local\Temp\6a21404803d6c6770d573818036304ce4f3bda06f0e07adfc79ebc2a72f78618N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3076
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FNBYD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - 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:4728
- - 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:3840
  - - 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:4408
  - - 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:532

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0719851e086ad2f5c74dee7e2eb9e8f2

SHA1
7272ba95008803600d449557b7039fc7acaf7fe5

SHA256
4a20b56377fbe4191ac157a4432bcdf6534185541a09fdc4e449a7744571a912

SHA512
867eeaab4369bd4ef85c50bbbb9a2d4adde65238ba55483bbcb8d3eac9fca3041fbf548946103b8088658df1a482533d15cd84afb2e6469afe55257f0150e1ad

Download Submit
memory/532-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/532-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/532-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/532-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/532-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/532-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1296-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/1296-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1296-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1296-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1296-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1296-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/3076-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3076-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3076-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3076-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3076-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3076-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3840-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3840-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3840-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4408-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads