9f94f61759b69060d4690bddc51bf0ff15d6c103779355b2399e039cf0b0cba7

Analysis

max time kernel
151s
max time network
138s
platform
windows7_x64
resource
win7v20201028
submitted
06-11-2020 10:37

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General

Target

main.file.rtf
Size

675KB
MD5

1239854d603dfaf0d332ba7551d98b4e
SHA1

5e4070dcac6dc3601a37cfd372e38c7274a23d41
SHA256

9f94f61759b69060d4690bddc51bf0ff15d6c103779355b2399e039cf0b0cba7
SHA512

5bd991bbc46736d2201fa6cb61d9c11cf4d49ef5eb52d151452cef4c0ed42d251e643803a43e467a70c3d05911006535b24298410a4aec4a1b01608184118d24

Score

8^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

rekeywiz.exe

pid process

1960 rekeywiz.exe
Loads dropped DLL 3 IoCs

Processes:

rekeywiz.exe

pid process

1960 rekeywiz.exe
1960 rekeywiz.exe
1960 rekeywiz.exe

pid	process
1960	rekeywiz.exe

pid	process
1960	rekeywiz.exe
1960	rekeywiz.exe
1960	rekeywiz.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

EQNEDT32.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Sync = "C:\\ProgramData\\SyncFiles\\rekeywiz.exe"	EQNEDT32.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 Windows directory 1 IoCs

Processes:

WINWORD.EXE

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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1948 schtasks.exe
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

Processes:

EQNEDT32.EXE

pid process

1332 EQNEDT32.EXE

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

pid	process
1948	schtasks.exe

pid	process
1332	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXEEQNEDT32.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Main	EQNEDT32.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

rekeywiz.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	rekeywiz.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	rekeywiz.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1808 WINWORD.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

WINWORD.EXE

pid process

1808 WINWORD.EXE
1808 WINWORD.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1808 WINWORD.EXE
1808 WINWORD.EXE

pid	process
1808	WINWORD.EXE

pid	process
1808	WINWORD.EXE
1808	WINWORD.EXE

pid	process
1808	WINWORD.EXE
1808	WINWORD.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EQNEDT32.EXEWINWORD.EXEtaskeng.exe

description	pid	process	target process
PID 1332 wrote to memory of 1948	1332	EQNEDT32.EXE	schtasks.exe
PID 1332 wrote to memory of 1948	1332	EQNEDT32.EXE	schtasks.exe
PID 1332 wrote to memory of 1948	1332	EQNEDT32.EXE	schtasks.exe
PID 1332 wrote to memory of 1948	1332	EQNEDT32.EXE	schtasks.exe
PID 1808 wrote to memory of 436	1808	WINWORD.EXE	splwow64.exe
PID 1808 wrote to memory of 436	1808	WINWORD.EXE	splwow64.exe
PID 1808 wrote to memory of 436	1808	WINWORD.EXE	splwow64.exe
PID 1808 wrote to memory of 436	1808	WINWORD.EXE	splwow64.exe
PID 752 wrote to memory of 1960	752	taskeng.exe	rekeywiz.exe
PID 752 wrote to memory of 1960	752	taskeng.exe	rekeywiz.exe
PID 752 wrote to memory of 1960	752	taskeng.exe	rekeywiz.exe
PID 752 wrote to memory of 1960	752	taskeng.exe	rekeywiz.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\main.file.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:436

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Adds Run key to start application
- Launches Equation Editor
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1332

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /tn "UpdateService" /sc once /tr "C:\ProgramData\SyncFiles\rekeywiz.exe" /st 10:47
2⤵
- Creates scheduled task(s)
PID:1948

C:\Windows\system32\taskeng.exe
taskeng.exe {BD861BD7-8966-4EA7-99FE-A2BD09E1600D} S-1-5-21-3825035466-2522850611-591511364-1000:EIDQHRRL\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:752

C:\ProgramData\SyncFiles\rekeywiz.exe
C:\ProgramData\SyncFiles\rekeywiz.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies system certificate store
PID:1960

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Install Root Certificate

T1130

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\SyncFiles\7Dn7kpA.tmp
MD5
bbc8047b4fca96460442fa6b35046016

SHA1
c868a561fe5bae6bae5d9fd4bbd2c722dd7c9c84

SHA256
d1088c944a0937f8d4728f874a156aaf27c1c84fe7318de2ef0326e7e584995f

SHA512
4a4d97939ccd2a243794707b0fd3f5139663f86986eeb0db9df144e2c2f6984e35a0652f01fe3b744f8a59e8355b5ad5444be0327258cfa3380f39dcd4498bc9

Download Submit
C:\ProgramData\SyncFiles\DUser.dll
MD5
f140fdfa0d1068a949576ea4fff011eb

SHA1
8ed43a3b8933167fdf4f961d2395efce0a218106

SHA256
264c081147d128b87c9ce5813792f13d79df619d6480e356c29be483c8cb0d67

SHA512
8aa3ee378b3f659a0e40ba0f2b1780366d59bbd7720f60df403fe7a4e37d39629cbbaabc47e7feb7f9736376f4381a2a484522635e2ced886556900d62413853

Download Submit
C:\ProgramData\SyncFiles\rekeywiz.exe
MD5
082ed4a73761682f897ea1d7f4529f69

SHA1
4f77bda9714d009b16e6a13f88b3e12caf0a779d

SHA256
fa86b5bc5343ca92c235304b8dcbcf4188c6be7d4621c625564bebd5326ed850

SHA512
372c93f63dfeb75de4a1c80f711733efabee635eaa1dfd0a955cae5fd40ba2a3fba8f6ae020cf3b7bb8ccc756fa71a98012be0a328a71c2ba1b4d2b7a0935632

Download Submit
C:\ProgramData\SyncFiles\rekeywiz.exe
MD5
082ed4a73761682f897ea1d7f4529f69

SHA1
4f77bda9714d009b16e6a13f88b3e12caf0a779d

SHA256
fa86b5bc5343ca92c235304b8dcbcf4188c6be7d4621c625564bebd5326ed850

SHA512
372c93f63dfeb75de4a1c80f711733efabee635eaa1dfd0a955cae5fd40ba2a3fba8f6ae020cf3b7bb8ccc756fa71a98012be0a328a71c2ba1b4d2b7a0935632

Download Submit
C:\ProgramData\SyncFiles\rekeywiz.exe.config
MD5
70ecd7e0bdf8f8d01f7f58be6525e079

SHA1
78146939a0a921ac2bcfc5a0ae39705614bc000e

SHA256
b1fa0771099733e7a9fa296acc7518c1e36c4e473b59eec7acbfb89d80252757

SHA512
ed98814c339f50331ea0a80986821aea32b99adf965d6103aa156a655cb201a33dd16fd084432382ea4144ccee41f071c204213bf74324b602daf8d6346780fc

Download Submit
C:\Users\Admin\AppData\Local\Temp\1.a
MD5
a37415e2f7aab3337c38eafc6c743455

SHA1
258b969882c55e487b9a84667a333531069508cc

SHA256
0d27e056d926ae8a41472d3ff9c2e47c456b480dff535de95206145eb16887b7

SHA512
f76a62a45496339920d6cbe0e52241c937d1b1ee02b37bfa56a4731650eac04b5bc5acbd1fef78534569faa0ed204abd72233bcfdbdb78c7b14a5eb496290bba

Download Submit
\ProgramData\SyncFiles\Duser.dll
MD5
f140fdfa0d1068a949576ea4fff011eb

SHA1
8ed43a3b8933167fdf4f961d2395efce0a218106

SHA256
264c081147d128b87c9ce5813792f13d79df619d6480e356c29be483c8cb0d67

SHA512
8aa3ee378b3f659a0e40ba0f2b1780366d59bbd7720f60df403fe7a4e37d39629cbbaabc47e7feb7f9736376f4381a2a484522635e2ced886556900d62413853

Download Submit
\ProgramData\SyncFiles\Duser.dll
MD5
f140fdfa0d1068a949576ea4fff011eb

SHA1
8ed43a3b8933167fdf4f961d2395efce0a218106

SHA256
264c081147d128b87c9ce5813792f13d79df619d6480e356c29be483c8cb0d67

SHA512
8aa3ee378b3f659a0e40ba0f2b1780366d59bbd7720f60df403fe7a4e37d39629cbbaabc47e7feb7f9736376f4381a2a484522635e2ced886556900d62413853

Download Submit
\ProgramData\SyncFiles\Duser.dll
MD5
f140fdfa0d1068a949576ea4fff011eb

SHA1
8ed43a3b8933167fdf4f961d2395efce0a218106

SHA256
264c081147d128b87c9ce5813792f13d79df619d6480e356c29be483c8cb0d67

SHA512
8aa3ee378b3f659a0e40ba0f2b1780366d59bbd7720f60df403fe7a4e37d39629cbbaabc47e7feb7f9736376f4381a2a484522635e2ced886556900d62413853

Download Submit
memory/436-4-0x0000000000000000-mapping.dmp

Download
memory/1332-3-0x00000000085D0000-0x00000000085F3000-memory.dmp

Filesize
140KB

Download
memory/1728-2-0x000007FEF7020000-0x000007FEF729A000-memory.dmp

Filesize
2.5MB

Download
memory/1948-1-0x0000000000000000-mapping.dmp

Download
memory/1960-6-0x0000000000000000-mapping.dmp

Download