modiloader | 76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9c

Analysis

max time kernel
120s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 16:22

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General

Target

76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
Size

90KB
MD5

f506e615a70cbcdf2e4968b5d6c61d70
SHA1

8f74818cdee5fc6393e46e88f9de046c44682cff
SHA256

76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9c
SHA512

b68f253d50c9033dd3b8fd4854ada7aa78fa7cbb846f22c89aea2c24c9c114df235ad5440ef212103442c145d46bf6382dd1684b4995c5b75853f94297963469
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 4 IoCs

resource	yara_rule
behavioral2/memory/3984-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3984-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3984-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3984-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe

Executes dropped EXE 3 IoCs

pid	Process
4600	csrsll.exe
1012	csrsll.exe
3984	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4540-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4540-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3316-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3316-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4540-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3316-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023633-29.dat	upx
behavioral2/memory/4600-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3316-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4600-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4600-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3984-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3984-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3984-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3984-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4600-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3984-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3316-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1012-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3984-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2170637797-568393320-3232933035-1000\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 4540 set thread context of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4600 set thread context of 1012	4600	csrsll.exe	103
PID 4600 set thread context of 3984	4600	csrsll.exe	104

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	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe
Token: SeDebugPrivilege	1012	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
4600	csrsll.exe
1012	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 4540 wrote to memory of 3316	4540	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	93
PID 3316 wrote to memory of 3372	3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	95
PID 3316 wrote to memory of 3372	3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	95
PID 3316 wrote to memory of 3372	3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	95
PID 3372 wrote to memory of 1960	3372	cmd.exe	98
PID 3372 wrote to memory of 1960	3372	cmd.exe	98
PID 3372 wrote to memory of 1960	3372	cmd.exe	98
PID 3316 wrote to memory of 4600	3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	99
PID 3316 wrote to memory of 4600	3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	99
PID 3316 wrote to memory of 4600	3316	76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe	99
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 1012	4600	csrsll.exe	103
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104
PID 4600 wrote to memory of 3984	4600	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
"C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe
  "C:\Users\Admin\AppData\Local\Temp\76ffb7624ec9c11cf2f169792d06c737c5124e53855133329d3908d33498ea9cN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3316
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RNMGP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3372
  - - 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:1960
- - 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:4600
  - - 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:1012
  - - 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:3984

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4216,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4076 /prefetch:8
1⤵
PID:4804

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\RNMGP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
38a1786ba826d054ca35ea1db560e8c9

SHA1
e2a6194c3193ca718992ce9c6975e0cdce57a430

SHA256
6dbfd44a90351bbb40ea480d99431441767f66a454e043681ef4aa6fdaca24b7

SHA512
3327b6124871877e9e18faa067cb098746c1eea962f38445f3e4e454ae5480b502bc66af277d801b542235296477d7e90bd1785c19586cf3c9d3ead67d1a857f

Download Submit
memory/1012-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3316-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3316-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3316-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3316-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3316-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3316-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3984-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3984-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3984-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3984-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3984-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3984-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4540-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4540-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4540-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/4540-5-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4540-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4540-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4600-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4600-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4600-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4600-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads