bandook | b9ca91d4651446f6cd6283af2acc1a14c73e9abc746323cd684b8f208fc42b8f

General

Target

b9ca91d4651446f6cd6283af2acc1a14c73e9abc746323cd684b8f208fc42b8f.rtf
Size

1.9MB
MD5

3f57988fa30c927eaec2cd3ea07e1345
SHA1

02ada56f35fcf701b5f93e4133caef910d51f6b7
SHA256

b9ca91d4651446f6cd6283af2acc1a14c73e9abc746323cd684b8f208fc42b8f
SHA512

686e91ee0db732d984b48a4d44fbe4a4d94022b80420f67a89bd560fd9ab6d1dbfebe0f930c7c5b3590aac8c8d90c548f5764fbe8beda2cead1fe2978a7db9d1
SSDEEP

24576:eFj/+UN64hNf4nQbaOFjA1hVaZFdIsfy+aOEDlh6Nt3W2cp+jpAHsqTxRTr9D2yb:X

Score

10^/10

bandook persistence rat trojan

Malware Config

Extracted

Family

bandook

C2

iamgood.blogdns.net

Signatures

Bandook RAT
Bandook is a remote access tool written in C++ and shipped with a loader written in Delphi.
rat trojan bandook

Bandook payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1560-70-0x0000000013149D07-mapping.dmp	family_bandook
behavioral1/memory/1560-69-0x0000000013140000-0x0000000013B94000-memory.dmp	family_bandook
behavioral1/memory/1560-74-0x0000000013140000-0x0000000013B94000-memory.dmp	family_bandook
behavioral1/memory/1560-75-0x0000000013140000-0x0000000013B94000-memory.dmp	family_bandook
behavioral1/memory/1560-76-0x0000000013140000-0x0000000013B94000-memory.dmp	family_bandook

Executes dropped EXE 2 IoCs

Processes:

~WRX0232D.tmp~WRX0232D.tmp

pid process

268 ~WRX0232D.tmp
1560 ~WRX0232D.tmp

pid	process
268	~WRX0232D.tmp
1560	~WRX0232D.tmp

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exeiexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ebe = "C:\\Users\\Admin\\AppData\\Roaming\\ebe\\ebe.exe"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ebe = "C:\\Users\\Admin\\AppData\\Roaming\\ebe\\ebe.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

~WRX0232D.tmp

description pid process target process

PID 268 set thread context of 1560 268 ~WRX0232D.tmp ~WRX0232D.tmp
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 268 set thread context of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1672 WINWORD.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WINWORD.EXE

pid process

1672 WINWORD.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1672 WINWORD.EXE
1672 WINWORD.EXE

pid	process
1672	WINWORD.EXE

pid	process
1672	WINWORD.EXE

pid	process
1672	WINWORD.EXE
1672	WINWORD.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

WINWORD.EXE~WRX0232D.tmp~WRX0232D.tmp

description	pid	process	target process
PID 1672 wrote to memory of 956	1672	WINWORD.EXE	splwow64.exe
PID 1672 wrote to memory of 956	1672	WINWORD.EXE	splwow64.exe
PID 1672 wrote to memory of 956	1672	WINWORD.EXE	splwow64.exe
PID 1672 wrote to memory of 956	1672	WINWORD.EXE	splwow64.exe
PID 268 wrote to memory of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp
PID 268 wrote to memory of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp
PID 268 wrote to memory of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp
PID 268 wrote to memory of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp
PID 268 wrote to memory of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp
PID 268 wrote to memory of 1560	268	~WRX0232D.tmp	~WRX0232D.tmp
PID 1560 wrote to memory of 772	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 772	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 772	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 772	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 772	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1416	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1416	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1416	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1416	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1416	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1748	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1748	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1748	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1748	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1748	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1036	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1036	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1036	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1036	1560	~WRX0232D.tmp	iexplore.exe
PID 1560 wrote to memory of 1036	1560	~WRX0232D.tmp	iexplore.exe

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\b9ca91d4651446f6cd6283af2acc1a14c73e9abc746323cd684b8f208fc42b8f.rtf"
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:956

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp
"C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:268

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp
"C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1560

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:772

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
PID:1416

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:1748

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
PID:1036

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp
Filesize
803KB

MD5
ef6211f8e06e188de46281d6827d73c2

SHA1
64442b66bbd7705f4d532324b4d5bf10236c306e

SHA256
300500a5ca6cc96d6dcd4350fe353faccd3af631a383a2c47ef1e31e6e836c71

SHA512
c9005a9d968b193f3a0e96dd6eaf8ef00dee27f36f4490a5348e23b3746ddff8e510c20431784b422db8d7b65884feacc94012c2bf2c43c8f8e2e116d533600a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp
Filesize
803KB

MD5
ef6211f8e06e188de46281d6827d73c2

SHA1
64442b66bbd7705f4d532324b4d5bf10236c306e

SHA256
300500a5ca6cc96d6dcd4350fe353faccd3af631a383a2c47ef1e31e6e836c71

SHA512
c9005a9d968b193f3a0e96dd6eaf8ef00dee27f36f4490a5348e23b3746ddff8e510c20431784b422db8d7b65884feacc94012c2bf2c43c8f8e2e116d533600a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRX0232D.tmp
Filesize
803KB

MD5
ef6211f8e06e188de46281d6827d73c2

SHA1
64442b66bbd7705f4d532324b4d5bf10236c306e

SHA256
300500a5ca6cc96d6dcd4350fe353faccd3af631a383a2c47ef1e31e6e836c71

SHA512
c9005a9d968b193f3a0e96dd6eaf8ef00dee27f36f4490a5348e23b3746ddff8e510c20431784b422db8d7b65884feacc94012c2bf2c43c8f8e2e116d533600a

Download Submit
C:\Users\Admin\AppData\Roaming\ebe\ebe.exe
Filesize
803KB

MD5
ef6211f8e06e188de46281d6827d73c2

SHA1
64442b66bbd7705f4d532324b4d5bf10236c306e

SHA256
300500a5ca6cc96d6dcd4350fe353faccd3af631a383a2c47ef1e31e6e836c71

SHA512
c9005a9d968b193f3a0e96dd6eaf8ef00dee27f36f4490a5348e23b3746ddff8e510c20431784b422db8d7b65884feacc94012c2bf2c43c8f8e2e116d533600a

Download Submit
memory/956-59-0x0000000000000000-mapping.dmp

Download
memory/956-60-0x000007FEFBDB1000-0x000007FEFBDB3000-memory.dmp

Filesize
8KB

Download
memory/1560-74-0x0000000013140000-0x0000000013B94000-memory.dmp

Filesize
10.3MB

Download
memory/1560-69-0x0000000013140000-0x0000000013B94000-memory.dmp

Filesize
10.3MB

Download
memory/1560-76-0x0000000013140000-0x0000000013B94000-memory.dmp

Filesize
10.3MB

Download
memory/1560-75-0x0000000013140000-0x0000000013B94000-memory.dmp

Filesize
10.3MB

Download
memory/1560-70-0x0000000013149D07-mapping.dmp

Download
memory/1560-67-0x0000000013140000-0x0000000013B94000-memory.dmp

Filesize
10.3MB

Download
memory/1672-61-0x000000006B891000-0x000000006B893000-memory.dmp

Filesize
8KB

Download
memory/1672-66-0x0000000005490000-0x0000000005590000-memory.dmp

Filesize
1024KB

Download
memory/1672-64-0x000000007116D000-0x0000000071178000-memory.dmp

Filesize
44KB

Download
memory/1672-57-0x0000000075201000-0x0000000075203000-memory.dmp

Filesize
8KB

Download
memory/1672-65-0x0000000005360000-0x0000000005370000-memory.dmp

Filesize
64KB

Download
memory/1672-54-0x0000000072701000-0x0000000072704000-memory.dmp

Filesize
12KB

Download
memory/1672-58-0x000000007116D000-0x0000000071178000-memory.dmp

Filesize
44KB

Download
memory/1672-62-0x0000000005360000-0x0000000005370000-memory.dmp

Filesize
64KB

Download
memory/1672-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1672-55-0x0000000070181000-0x0000000070183000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads