c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2022, 07:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f.dll
Size

34KB
MD5

f41b417f8945e50760929a80c7ef8c59
SHA1

f1b389f7597b8eb9f09a4bd04903019a991142f9
SHA256

c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f
SHA512

1de31a94fc2ba2cd24023093a254858e31b2e19a5943266b31ac6b818a9ebe566ef6f3c652d84075700ee7213a268ff05bd6ca542e641090e28fa6ccb3f78c5c
SSDEEP

768:CRE3rOLiay36F2HfSva8nmjXASGZ3gzGY0QQzAwuAZ0Vyq7:DU1F7DmjXzGZwaYVQEwuAZc

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
29	3040	rundll32.exe
31	3040	rundll32.exe
32	3040	rundll32.exe

Loads dropped DLL 3 IoCs

pid	Process
3036	rundll32.exe
3036	rundll32.exe
3040	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\xxyxXRig.dll,#1"	rundll32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\xxyxXRig.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\xxyxXRig.dll	rundll32.exe
File created	C:\Windows\SysWOW64\ddcBtUlM.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ = "C:\\Windows\\SysWow64\\xxyxXRig.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3036	rundll32.exe
3036	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe
3040	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3036	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3036	rundll32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 3036	1368	rundll32.exe	69
PID 1368 wrote to memory of 3036	1368	rundll32.exe	69
PID 1368 wrote to memory of 3036	1368	rundll32.exe	69
PID 3036 wrote to memory of 588	3036	rundll32.exe	3
PID 3036 wrote to memory of 3040	3036	rundll32.exe	85
PID 3036 wrote to memory of 3040	3036	rundll32.exe	85
PID 3036 wrote to memory of 3040	3036	rundll32.exe	85
PID 3040 wrote to memory of 3692	3040	rundll32.exe	86
PID 3040 wrote to memory of 3692	3040	rundll32.exe	86
PID 3040 wrote to memory of 3692	3040	rundll32.exe	86

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:588

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\xxyxXRig.dll,a
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in System32 directory
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3040
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Windows\system32\ddcBtUlM.dll",s
      4⤵
      PID:3692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\ddcBtUlM.dll

Filesize
7KB

MD5
e6e1dadbfa5bb505379680095e720653

SHA1
b3593ff068fa42ef977412318c93e645bc3595c8

SHA256
107ff3a6d63930e9e4e7b5fc6f4bfc6eed9cb8bac3b8859c1d85c04f63d380fc

SHA512
a3e43381054268c215e8c211ae24ac51cde3da7a59131bac187dba048e16460c014dbea6954a96f5300ce80908aae0d19eb8659d50908b81414c3e8b764ae2c9

Download Submit
C:\Windows\SysWOW64\xxyxXRig.dll

Filesize
34KB

MD5
f41b417f8945e50760929a80c7ef8c59

SHA1
f1b389f7597b8eb9f09a4bd04903019a991142f9

SHA256
c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f

SHA512
1de31a94fc2ba2cd24023093a254858e31b2e19a5943266b31ac6b818a9ebe566ef6f3c652d84075700ee7213a268ff05bd6ca542e641090e28fa6ccb3f78c5c

Download Submit
C:\Windows\SysWOW64\xxyxXRig.dll

Filesize
34KB

MD5
f41b417f8945e50760929a80c7ef8c59

SHA1
f1b389f7597b8eb9f09a4bd04903019a991142f9

SHA256
c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f

SHA512
1de31a94fc2ba2cd24023093a254858e31b2e19a5943266b31ac6b818a9ebe566ef6f3c652d84075700ee7213a268ff05bd6ca542e641090e28fa6ccb3f78c5c

Download Submit
C:\Windows\SysWOW64\xxyxXRig.dll

Filesize
34KB

MD5
f41b417f8945e50760929a80c7ef8c59

SHA1
f1b389f7597b8eb9f09a4bd04903019a991142f9

SHA256
c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f

SHA512
1de31a94fc2ba2cd24023093a254858e31b2e19a5943266b31ac6b818a9ebe566ef6f3c652d84075700ee7213a268ff05bd6ca542e641090e28fa6ccb3f78c5c

Download Submit
C:\Windows\SysWOW64\xxyxXRig.dll

Filesize
34KB

MD5
f41b417f8945e50760929a80c7ef8c59

SHA1
f1b389f7597b8eb9f09a4bd04903019a991142f9

SHA256
c00a476332468890344fe5e2d98b5cdf0598dd342a562b033f6ec5a32405bc9f

SHA512
1de31a94fc2ba2cd24023093a254858e31b2e19a5943266b31ac6b818a9ebe566ef6f3c652d84075700ee7213a268ff05bd6ca542e641090e28fa6ccb3f78c5c

Download Submit
memory/3036-136-0x0000000000A40000-0x0000000000A45000-memory.dmp

Filesize
20KB

Download
memory/3036-138-0x0000000002460000-0x00000000024ED000-memory.dmp

Filesize
564KB

Download
memory/3036-139-0x0000000002460000-0x00000000024ED000-memory.dmp

Filesize
564KB

Download
memory/3036-140-0x0000000002460000-0x00000000024ED000-memory.dmp

Filesize
564KB

Download
memory/3036-141-0x0000000002460000-0x00000000024ED000-memory.dmp

Filesize
564KB

Download
memory/3036-137-0x0000000002470000-0x0000000002484000-memory.dmp

Filesize
80KB

Download
memory/3036-135-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3040-145-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3040-146-0x0000000000F30000-0x0000000000F35000-memory.dmp

Filesize
20KB

Download