modiloader | 84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20af

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-11-2024 10:07

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General

Target

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe
Size

90KB
MD5

67641c02e29a0c7615d113a11c8836c0
SHA1

d5371ffbab0789f9241f1b10532ef170b0577e5e
SHA256

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20af
SHA512

9cfbeb3eda98d2879525f5ae77d201e5dbc257b2475a02f199f1722304837a2a94aa406dd5f0b672b0b133e04f858a726ecb098328862d4e4ac9522fa2b8d8d1
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 family
modiloader

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1168-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1168-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1168-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1168-61-0x0000000000400000-0x0000000000414000-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

Processes:

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
4116	csrsll.exe
380	csrsll.exe
1168	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.execsrsll.exe

description	pid	Process	procid_target
PID 400 set thread context of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 4116 set thread context of 380	4116	csrsll.exe	99
PID 4116 set thread context of 1168	4116	csrsll.exe	100

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/400-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/400-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4516-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4516-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4516-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/400-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0011000000023b38-29.dat	upx
behavioral2/memory/4116-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4516-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4116-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1168-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1168-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4116-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4516-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/380-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1168-61-0x0000000000400000-0x0000000000414000-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

Processes:

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.execmd.exereg.execsrsll.execsrsll.execsrsll.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe
Token: SeDebugPrivilege	380	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.execsrsll.execsrsll.exe

pid	Process
400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe
4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe
4116	csrsll.exe
380	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 400 wrote to memory of 4516	400	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	91
PID 4516 wrote to memory of 1696	4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	93
PID 4516 wrote to memory of 1696	4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	93
PID 4516 wrote to memory of 1696	4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	93
PID 1696 wrote to memory of 4048	1696	cmd.exe	97
PID 1696 wrote to memory of 4048	1696	cmd.exe	97
PID 1696 wrote to memory of 4048	1696	cmd.exe	97
PID 4516 wrote to memory of 4116	4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	98
PID 4516 wrote to memory of 4116	4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	98
PID 4516 wrote to memory of 4116	4516	84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe	98
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 380	4116	csrsll.exe	99
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100
PID 4116 wrote to memory of 1168	4116	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe
"C:\Users\Admin\AppData\Local\Temp\84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:400
- C:\Users\Admin\AppData\Local\Temp\84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe
  "C:\Users\Admin\AppData\Local\Temp\84dae81a70a52cfe525d0b0efb654172a14c2f1051d5119f7f0055bdc1cc20afN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4516
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CCOUK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1696
  - - 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:4048
- - 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:4116
  - - 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:380
  - - 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:1168

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\CCOUK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
be19419e611053ac5422e752a842994d

SHA1
c0074b4b67b6177614b72be34157d725385f81ee

SHA256
7068ddaffbef19968fdb38428347055e33bbead596b363a529c901372373e3dc

SHA512
62081f89fa791bd6ab2a8ccbdb95f84072af1d4205c7a97672bee27f04807b1599d7b4fd88737f89621543afb140e33b5e445eb2e3e0a37921a85d4a0cd1f248

Download Submit
memory/380-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/400-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/400-3-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/400-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/400-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/400-5-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/400-6-0x0000000002430000-0x0000000002432000-memory.dmp

Filesize
8KB

Download
memory/1168-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1168-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4116-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4116-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4116-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4516-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4516-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4516-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4516-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4516-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4516-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download