dcrat | 27ce70fee0c8e0e90e20dfd2f1e2db5d5a13b8857be1dfd2142f04ab77bc6510

Analysis

max time kernel
138s
max time network
152s
platform
windows7_x64
resource
win7v20210410
submitted
16-04-2021 06:39

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General

Target

qbsubf8fng_AGOSTO_DOC21408001.doc
Size

1.4MB
MD5

53a47a7554872f55e5d4cf09d9598b20
SHA1

6d8d37d0cdbfb96d79eb69e05766ee40393fcd63
SHA256

27ce70fee0c8e0e90e20dfd2f1e2db5d5a13b8857be1dfd2142f04ab77bc6510
SHA512

f8764308302ec4088ba5c2f6ea8efc06de66e771932d42a22b449fcfb32b3afc5fdf98a7417291cbef36cfcdbbf494b3983faa03bef43c3bb9c16a1bfb796f19

Score

10^/10

dcrat diamondfox botnet discovery infostealer rat spyware stealer

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
DiamondFox
DiamondFox is a multipurpose botnet with many capabilities.
botnet stealer diamondfox

DiamondFox payload 3 IoCs

Detects DiamondFox payload in file/memory.

resource	yara_rule
behavioral1/memory/1336-74-0x0000000000400000-0x0000000000435000-memory.dmp	diamondfox
behavioral1/memory/1336-75-0x0000000000401000-mapping.dmp	diamondfox
behavioral1/memory/1336-79-0x0000000000400000-0x0000000000435000-memory.dmp	diamondfox

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1696-87-0x0000000000400000-0x000000000047C000-memory.dmp	WebBrowserPassView
behavioral1/memory/1696-88-0x00000000004466F4-mapping.dmp	WebBrowserPassView
behavioral1/memory/1696-91-0x0000000000400000-0x000000000047C000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/1696-87-0x0000000000400000-0x000000000047C000-memory.dmp	Nirsoft
behavioral1/memory/1696-88-0x00000000004466F4-mapping.dmp	Nirsoft
behavioral1/memory/1696-91-0x0000000000400000-0x000000000047C000-memory.dmp	Nirsoft

Blocklisted process makes network request 2 IoCs

flow	pid	Process
6	1724	EQNEDT32.EXE
7	1724	EQNEDT32.EXE

Executes dropped EXE 3 IoCs

pid	Process
992	69577.exe
1336	69577.exe
1696	69577.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\69577.exe	69577.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\69577.exe	69577.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	EQNEDT32.EXE

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 992 set thread context of 1336	992	69577.exe	36
PID 1336 set thread context of 1696	1336	69577.exe	52

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
1724	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
484	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 53 IoCs

pid	Process
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
992	69577.exe
1336	69577.exe
1696	69577.exe
1696	69577.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	992	69577.exe
Token: SeIncreaseQuotaPrivilege	292	wmic.exe
Token: SeSecurityPrivilege	292	wmic.exe
Token: SeTakeOwnershipPrivilege	292	wmic.exe
Token: SeLoadDriverPrivilege	292	wmic.exe
Token: SeSystemProfilePrivilege	292	wmic.exe
Token: SeSystemtimePrivilege	292	wmic.exe
Token: SeProfSingleProcessPrivilege	292	wmic.exe
Token: SeIncBasePriorityPrivilege	292	wmic.exe
Token: SeCreatePagefilePrivilege	292	wmic.exe
Token: SeBackupPrivilege	292	wmic.exe
Token: SeRestorePrivilege	292	wmic.exe
Token: SeShutdownPrivilege	292	wmic.exe
Token: SeDebugPrivilege	292	wmic.exe
Token: SeSystemEnvironmentPrivilege	292	wmic.exe
Token: SeRemoteShutdownPrivilege	292	wmic.exe
Token: SeUndockPrivilege	292	wmic.exe
Token: SeManageVolumePrivilege	292	wmic.exe
Token: 33	292	wmic.exe
Token: 34	292	wmic.exe
Token: 35	292	wmic.exe
Token: SeIncreaseQuotaPrivilege	292	wmic.exe
Token: SeSecurityPrivilege	292	wmic.exe
Token: SeTakeOwnershipPrivilege	292	wmic.exe
Token: SeLoadDriverPrivilege	292	wmic.exe
Token: SeSystemProfilePrivilege	292	wmic.exe
Token: SeSystemtimePrivilege	292	wmic.exe
Token: SeProfSingleProcessPrivilege	292	wmic.exe
Token: SeIncBasePriorityPrivilege	292	wmic.exe
Token: SeCreatePagefilePrivilege	292	wmic.exe
Token: SeBackupPrivilege	292	wmic.exe
Token: SeRestorePrivilege	292	wmic.exe
Token: SeShutdownPrivilege	292	wmic.exe
Token: SeDebugPrivilege	292	wmic.exe
Token: SeSystemEnvironmentPrivilege	292	wmic.exe
Token: SeRemoteShutdownPrivilege	292	wmic.exe
Token: SeUndockPrivilege	292	wmic.exe
Token: SeManageVolumePrivilege	292	wmic.exe
Token: 33	292	wmic.exe
Token: 34	292	wmic.exe
Token: 35	292	wmic.exe
Token: SeIncreaseQuotaPrivilege	928	wmic.exe
Token: SeSecurityPrivilege	928	wmic.exe
Token: SeTakeOwnershipPrivilege	928	wmic.exe
Token: SeLoadDriverPrivilege	928	wmic.exe
Token: SeSystemProfilePrivilege	928	wmic.exe
Token: SeSystemtimePrivilege	928	wmic.exe
Token: SeProfSingleProcessPrivilege	928	wmic.exe
Token: SeIncBasePriorityPrivilege	928	wmic.exe
Token: SeCreatePagefilePrivilege	928	wmic.exe
Token: SeBackupPrivilege	928	wmic.exe
Token: SeRestorePrivilege	928	wmic.exe
Token: SeShutdownPrivilege	928	wmic.exe
Token: SeDebugPrivilege	928	wmic.exe
Token: SeSystemEnvironmentPrivilege	928	wmic.exe
Token: SeRemoteShutdownPrivilege	928	wmic.exe
Token: SeUndockPrivilege	928	wmic.exe
Token: SeManageVolumePrivilege	928	wmic.exe
Token: 33	928	wmic.exe
Token: 34	928	wmic.exe
Token: 35	928	wmic.exe
Token: SeIncreaseQuotaPrivilege	928	wmic.exe
Token: SeSecurityPrivilege	928	wmic.exe
Token: SeTakeOwnershipPrivilege	928	wmic.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
484	WINWORD.EXE
484	WINWORD.EXE

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 484 wrote to memory of 1996	484	WINWORD.EXE	26
PID 484 wrote to memory of 1996	484	WINWORD.EXE	26
PID 484 wrote to memory of 1996	484	WINWORD.EXE	26
PID 484 wrote to memory of 1996	484	WINWORD.EXE	26
PID 1724 wrote to memory of 992	1724	EQNEDT32.EXE	33
PID 1724 wrote to memory of 992	1724	EQNEDT32.EXE	33
PID 1724 wrote to memory of 992	1724	EQNEDT32.EXE	33
PID 1724 wrote to memory of 992	1724	EQNEDT32.EXE	33
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 992 wrote to memory of 1336	992	69577.exe	36
PID 1336 wrote to memory of 292	1336	69577.exe	37
PID 1336 wrote to memory of 292	1336	69577.exe	37
PID 1336 wrote to memory of 292	1336	69577.exe	37
PID 1336 wrote to memory of 292	1336	69577.exe	37
PID 1336 wrote to memory of 928	1336	69577.exe	39
PID 1336 wrote to memory of 928	1336	69577.exe	39
PID 1336 wrote to memory of 928	1336	69577.exe	39
PID 1336 wrote to memory of 928	1336	69577.exe	39
PID 1336 wrote to memory of 1760	1336	69577.exe	42
PID 1336 wrote to memory of 1760	1336	69577.exe	42
PID 1336 wrote to memory of 1760	1336	69577.exe	42
PID 1336 wrote to memory of 1760	1336	69577.exe	42
PID 1336 wrote to memory of 1676	1336	69577.exe	44
PID 1336 wrote to memory of 1676	1336	69577.exe	44
PID 1336 wrote to memory of 1676	1336	69577.exe	44
PID 1336 wrote to memory of 1676	1336	69577.exe	44
PID 1336 wrote to memory of 112	1336	69577.exe	46
PID 1336 wrote to memory of 112	1336	69577.exe	46
PID 1336 wrote to memory of 112	1336	69577.exe	46
PID 1336 wrote to memory of 112	1336	69577.exe	46
PID 1336 wrote to memory of 1476	1336	69577.exe	48
PID 1336 wrote to memory of 1476	1336	69577.exe	48
PID 1336 wrote to memory of 1476	1336	69577.exe	48
PID 1336 wrote to memory of 1476	1336	69577.exe	48
PID 1336 wrote to memory of 1608	1336	69577.exe	50
PID 1336 wrote to memory of 1608	1336	69577.exe	50
PID 1336 wrote to memory of 1608	1336	69577.exe	50
PID 1336 wrote to memory of 1608	1336	69577.exe	50
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52
PID 1336 wrote to memory of 1696	1336	69577.exe	52

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\qbsubf8fng_AGOSTO_DOC21408001.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:484
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1996

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Public\69577.exe
  "C:\Users\Public\69577.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:992
- - C:\Users\Public\69577.exe
    "C:\Users\Public\69577.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1336
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" /Node:localhost /Namespace:\\root\SecurityCenter2 path AntiVirusProduct get DisplayName /FORMAT:List
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:292
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" os get caption /FORMAT:List
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:928
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_VideoController get caption /FORMAT:List
      4⤵
      PID:1760
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_NetworkAdapterConfiguration where IPEnabled=1 get IPAddress /FORMAT:List
      4⤵
      PID:1676
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" LogicalDisk Where DriveType=4 get VolumeName /FORMAT:List
      4⤵
      PID:112
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_PingStatus where address='vladisfoxlink.ru' get StatusCode /FORMAT:List
      4⤵
      PID:1476
  - - C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_PingStatus where address='vladisfoxlink.ru' get ResponseTime /FORMAT:List
      4⤵
      PID:1608
  - - C:\Users\Public\69577.exe
      /scomma "C:\Users\Public\1.log"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:1696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/484-93-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/484-60-0x0000000070701000-0x0000000070703000-memory.dmp

Filesize
8KB

Download
memory/484-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/484-59-0x0000000072C81000-0x0000000072C84000-memory.dmp

Filesize
12KB

Download
memory/992-72-0x0000000004BE0000-0x0000000004BE1000-memory.dmp

Filesize
4KB

Download
memory/992-69-0x0000000001340000-0x0000000001341000-memory.dmp

Filesize
4KB

Download
memory/992-73-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/992-71-0x00000000004F0000-0x000000000052F000-memory.dmp

Filesize
252KB

Download
memory/992-85-0x0000000004BE5000-0x0000000004BF6000-memory.dmp

Filesize
68KB

Download
memory/1336-79-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1336-74-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1696-87-0x0000000000400000-0x000000000047C000-memory.dmp

Filesize
496KB

Download
memory/1696-91-0x0000000000400000-0x000000000047C000-memory.dmp

Filesize
496KB

Download
memory/1724-64-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1996-63-0x000007FEFC181000-0x000007FEFC183000-memory.dmp

Filesize
8KB

Download