faad2bc8e61b75e595a80ff2b6d150ff8b27187a8ba426cc1e5e38e193ab6d42

General

Target

Bootstrapper.exe
Size

795KB
MD5

365971e549352a15e150b60294ec2e57
SHA1

2932242b427e81b1b4ac8c11fb17793eae0939f7
SHA256

faad2bc8e61b75e595a80ff2b6d150ff8b27187a8ba426cc1e5e38e193ab6d42
SHA512

f7ba1353e880213a6bdf5bd1dfdfd42a0acf4066a540a502e8df8fec8eac7fb80b75aa52e68eca98be3f7701da48eb90758e5b94d72013d3dff05e0aaf27e938
SSDEEP

12288:GYa9sBhIBdCdbX1USoeQDj/VNpA+dZIznBpGTEy:Pa98hIBdjSoeQDj/VNpZdZIznBpg

Score

6^/10

discovery

Malware Config

Signatures

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	pastebin.com
3	pastebin.com

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4396	1668	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bootstrapper.exe

Modifies registry class 21 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1\0	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 020202	OpenWith.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1\0\NodeSlot = "3"	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1\0\MRUListEx = ffffffff	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\Shell	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\Shell\SniffedFolderType = "Generic"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 0100000000000000ffffffff	OpenWith.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1 = 19002f433a5c000000000000000000000000000000000000000000	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\MRUListEx = 0100000000000000ffffffff	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1\0 = 8c003100000000000259227e110050524f4752417e310000740009000400efbec55259610259227e2e0000003f0000000000010000000000000000004a0000000000c3bc0501500072006f006700720061006d002000460069006c0065007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100370038003100000018000000	OpenWith.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\1\MRUListEx = 00000000ffffffff	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\3	OpenWith.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3732	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1668	Bootstrapper.exe

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe
3732	OpenWith.exe

C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 1852
  2⤵
  - Program crash
  PID:4396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1668 -ip 1668
1⤵
PID:4376

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2264

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:3732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1668-0-0x00000000742DE000-0x00000000742DF000-memory.dmp

Filesize
4KB

Download
memory/1668-1-0x00000000009A0000-0x0000000000A6E000-memory.dmp

Filesize
824KB

Download
memory/1668-2-0x00000000742D0000-0x0000000074A81000-memory.dmp

Filesize
7.7MB

Download
memory/1668-3-0x0000000005EF0000-0x0000000005F12000-memory.dmp

Filesize
136KB

Download
memory/1668-4-0x0000000005F20000-0x0000000006277000-memory.dmp

Filesize
3.3MB

Download
memory/1668-5-0x00000000742D0000-0x0000000074A81000-memory.dmp

Filesize
7.7MB

Download

Analysis

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