modiloader | d9acb0b8b3b285e4841eb2eded5cad21a2e43c077e03084c9381d73b6789417d

Analysis

max time kernel
119s
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
15-09-2024 18:28

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General

Target

Trojan.Win32.Darkeye.exe
Size

90KB
MD5

428c86a3b536d4d0f43a73f421c5ee00
SHA1

27a85c200da3a62f00a47316060273f3613e5bc0
SHA256

d9acb0b8b3b285e4841eb2eded5cad21a2e43c077e03084c9381d73b6789417d
SHA512

d3bc493c47c75965d811015572d91996aef69e9cc70675eb279d42fb9917d6a0f3c7745273e0e4ac5319658db7f979a65f35123712b4e2528cdeb47983ef09bd
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/4212-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4212-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4212-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4212-63-0x0000000000400000-0x0000000000414000-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	Trojan.Win32.Darkeye.exe

Executes dropped EXE 3 IoCs

pid	Process
3556	csrsll.exe
5032	csrsll.exe
4212	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1244-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1244-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/216-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/216-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1244-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/216-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023620-29.dat	upx
behavioral2/memory/3556-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/216-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3556-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4212-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/216-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4212-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4212-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4212-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4212-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3556-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3556-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5032-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4212-63-0x0000000000400000-0x0000000000414000-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 1244 set thread context of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 3556 set thread context of 5032	3556	csrsll.exe	103
PID 3556 set thread context of 4212	3556	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	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	Trojan.Win32.Darkeye.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Trojan.Win32.Darkeye.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe
Token: SeDebugPrivilege	5032	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1244	Trojan.Win32.Darkeye.exe
216	Trojan.Win32.Darkeye.exe
3556	csrsll.exe
5032	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 1244 wrote to memory of 216	1244	Trojan.Win32.Darkeye.exe	95
PID 216 wrote to memory of 1248	216	Trojan.Win32.Darkeye.exe	96
PID 216 wrote to memory of 1248	216	Trojan.Win32.Darkeye.exe	96
PID 216 wrote to memory of 1248	216	Trojan.Win32.Darkeye.exe	96
PID 1248 wrote to memory of 1172	1248	cmd.exe	99
PID 1248 wrote to memory of 1172	1248	cmd.exe	99
PID 1248 wrote to memory of 1172	1248	cmd.exe	99
PID 216 wrote to memory of 3556	216	Trojan.Win32.Darkeye.exe	100
PID 216 wrote to memory of 3556	216	Trojan.Win32.Darkeye.exe	100
PID 216 wrote to memory of 3556	216	Trojan.Win32.Darkeye.exe	100
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 5032	3556	csrsll.exe	103
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104
PID 3556 wrote to memory of 4212	3556	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe
  "C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Darkeye.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:216
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EQURF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1248
  - - 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:1172
- - 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:3556
  - - 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:5032
  - - 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:4212

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=3768,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=4012 /prefetch:8
1⤵
PID:860

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\EQURF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
49bc1b517f31e9e10d94675c1bddafcb

SHA1
8edc06c6444eac59af5d3ed32a14215ba9e28ec7

SHA256
53bd1edc12ec4d9f18338bd027c2b90da54cd7b3f2dfeb595a8db4f69f99bc06

SHA512
c272817ef44519d9c66f9147d6e6922e8a3651fe963ea12bf5f2177f509031906ce03cfbaf4ef3f291bb5c3569050678560baf606e7a1e9f953f8e6f759db64d

Download Submit
memory/216-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/216-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/216-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/216-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/216-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/216-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1244-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1244-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/1244-5-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/1244-6-0x0000000002BA0000-0x0000000002BA2000-memory.dmp

Filesize
8KB

Download
memory/1244-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1244-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3556-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3556-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3556-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3556-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4212-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4212-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4212-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4212-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4212-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4212-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5032-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads