b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6

General

Target

b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe
Size

2.3MB
MD5

d56df2995b539368495f3300e48d8e18
SHA1

8d2d02923afb5fb5e09ce1592104db17a3128246
SHA256

b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6
SHA512

2b25f9b2ff56abafcd8aa0a5fbae4ea78e9e95cec3d4cb832a7a3c5ec13af7d9ecf3ef26ec5c7144805868801aacb8de4113490c3bd665fda4e23ec05b9d8008
SSDEEP

49152:5u2s5FXQ4EmojLjCRELVf7Avil+dHIsLp1thIikN+6u2hsC:5+zX71oDCRAZUviAHImDqia7hsC

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2756	Broom.exe

Loads dropped DLL 1 IoCs

pid	Process
2924	b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.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
T1552.001

Drops desktop.ini file(s) 10 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Z0MOBW01\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini	Broom.exe
File opened for modification	C:\$RECYCLE.BIN\S-1-5-21-3618187007-3650799920-3290345941-1000\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\1HY7WIQC\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8GIGFD9B\desktop.ini	Broom.exe
File opened for modification	C:\$Recycle.Bin\S-1-5-21-3618187007-3650799920-3290345941-1000\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9ESV7R4E\desktop.ini	Broom.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini	Broom.exe

Drops file in Windows directory 23 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Prefetch\AgAppLaunch.db	Broom.exe
File opened for modification	C:\Windows\Prefetch\AgRobust.db	Broom.exe
File opened for modification	C:\Windows\Prefetch\CMD.EXE-4A81B364.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\NTOSBOOT-B00DFAAD.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\REG.EXE-E7E8BD26.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\RUNDLL32.EXE-2CD59FDD.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\RUNDLL32.EXE-863AA78D.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\SPPSVC.EXE-B0F8131B.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\BFSVC.EXE-9C7A4DEE.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\CLRGC.EXE-5D5B90F5.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\ReadyBoot\ReadyBoot.etl	Broom.exe
File opened for modification	C:\Windows\Prefetch\AgGlFaultHistory.db	Broom.exe
File opened for modification	C:\Windows\Prefetch\AgGlFgAppHistory.db	Broom.exe
File opened for modification	C:\Windows\Prefetch\AgGlGlobalHistory.db	Broom.exe
File opened for modification	C:\Windows\Prefetch\DRVINST.EXE-4CB4314A.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\MSCORSVW.EXE-245ED79E.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\PfSvPerfStats.bin	Broom.exe
File opened for modification	C:\Windows\Prefetch\CONHOST.EXE-1F3E9D7E.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\MSCORSVW.EXE-90526FAC.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\NETSH.EXE-F1B6DA12.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\RUNDLL32.EXE-860C49A4.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\SETUPUGC.EXE-E3C49C28.pf	Broom.exe
File opened for modification	C:\Windows\Prefetch\TASKHOST.EXE-7238F31D.pf	Broom.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	Broom.exe
Token: SeDebugPrivilege	2756	Broom.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2756	Broom.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2756	2924	b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe	28
PID 2924 wrote to memory of 2756	2924	b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe	28
PID 2924 wrote to memory of 2756	2924	b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe	28
PID 2924 wrote to memory of 2756	2924	b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe	28
PID 2756 wrote to memory of 2652	2756	Broom.exe	29
PID 2756 wrote to memory of 2652	2756	Broom.exe	29
PID 2756 wrote to memory of 2652	2756	Broom.exe	29
PID 2756 wrote to memory of 2652	2756	Broom.exe	29
PID 2756 wrote to memory of 2936	2756	Broom.exe	31
PID 2756 wrote to memory of 2936	2756	Broom.exe	31
PID 2756 wrote to memory of 2936	2756	Broom.exe	31
PID 2756 wrote to memory of 2936	2756	Broom.exe	31
PID 2756 wrote to memory of 2544	2756	Broom.exe	33
PID 2756 wrote to memory of 2544	2756	Broom.exe	33
PID 2756 wrote to memory of 2544	2756	Broom.exe	33
PID 2756 wrote to memory of 2544	2756	Broom.exe	33
PID 2756 wrote to memory of 2500	2756	Broom.exe	35
PID 2756 wrote to memory of 2500	2756	Broom.exe	35
PID 2756 wrote to memory of 2500	2756	Broom.exe	35
PID 2756 wrote to memory of 2500	2756	Broom.exe	35

C:\Users\Admin\AppData\Local\Temp\b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe
"C:\Users\Admin\AppData\Local\Temp\b87fd3c98383089618d2f66cbbecd2b0ed91db6923135235eb52a671f8dd7cb6.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Users\Admin\AppData\Local\Temp\Broom.exe
  C:\Users\Admin\AppData\Local\Temp\Broom.exe
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2756
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c rd /s /q c:\$Recycle.bin
    3⤵
    PID:2652
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c rd /s /q c:\recycler
    3⤵
    PID:2936
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c rd /s /q c:\$Recycle.bin
    3⤵
    PID:2544
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c rd /s /q c:\recycler
    3⤵
    PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$RECYCLE.BIN\S-1-5-21-3618187007-3650799920-3290345941-1000\desktop.ini

Filesize
129B

MD5
a526b9e7c716b3489d8cc062fbce4005

SHA1
2df502a944ff721241be20a9e449d2acd07e0312

SHA256
e1b9ce9b57957b1a0607a72a057d6b7a9b34ea60f3f8aa8f38a3af979bd23066

SHA512
d83d4c656c96c3d1809ad06ce78fa09a77781461c99109e4b81d1a186fc533a7e72d65a4cb7edf689eeccda8f687a13d3276f1111a1e72f7c3cd92a49bce0f88

Download Submit
C:\Users\Admin\AppData\Local\Temp\Broom.exe

Filesize
5.3MB

MD5
00e93456aa5bcf9f60f84b0c0760a212

SHA1
6096890893116e75bd46fea0b8c3921ceb33f57d

SHA256
ff3025f9cf19323c5972d14f00f01296d6d7a71547eca7e4016bfd0e1f27b504

SHA512
abd2be819c7d93bd6097155cf84eaf803e3133a7e0ca71f9d9cbc3c65e4e4a26415d2523a36adafdd19b0751e25ea1a99b8d060cad61cdfd1f79adf9cd4b4eca

Download Submit
C:\Users\Admin\AppData\Local\Temp\Broom.exe

Filesize
5.3MB

MD5
00e93456aa5bcf9f60f84b0c0760a212

SHA1
6096890893116e75bd46fea0b8c3921ceb33f57d

SHA256
ff3025f9cf19323c5972d14f00f01296d6d7a71547eca7e4016bfd0e1f27b504

SHA512
abd2be819c7d93bd6097155cf84eaf803e3133a7e0ca71f9d9cbc3c65e4e4a26415d2523a36adafdd19b0751e25ea1a99b8d060cad61cdfd1f79adf9cd4b4eca

Download Submit
\Users\Admin\AppData\Local\Temp\Broom.exe

Filesize
5.3MB

MD5
00e93456aa5bcf9f60f84b0c0760a212

SHA1
6096890893116e75bd46fea0b8c3921ceb33f57d

SHA256
ff3025f9cf19323c5972d14f00f01296d6d7a71547eca7e4016bfd0e1f27b504

SHA512
abd2be819c7d93bd6097155cf84eaf803e3133a7e0ca71f9d9cbc3c65e4e4a26415d2523a36adafdd19b0751e25ea1a99b8d060cad61cdfd1f79adf9cd4b4eca

Download Submit
memory/2756-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2756-6-0x0000000000400000-0x0000000000965000-memory.dmp

Filesize
5.4MB

Download
memory/2756-13-0x0000000000400000-0x0000000000965000-memory.dmp

Filesize
5.4MB

Download
memory/2756-19-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2756-20-0x0000000000400000-0x0000000000965000-memory.dmp

Filesize
5.4MB

Download

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