59d1d791b7fa9ee1614c83e54a56e0ef4f028027696a06087d1c587f02e1a4ac

General

Target

Purchase order-077.exe
Size

746KB
MD5

5db757b5513e230d3e64206a6973eca1
SHA1

e2695fb0884455889e720c4fecce6fed4950a135
SHA256

59d1d791b7fa9ee1614c83e54a56e0ef4f028027696a06087d1c587f02e1a4ac
SHA512

2768bde295afe87fa4d151974160d6b2a59d22115ed721e253c834419becc5c543cc26c8c36faeb7a120325f3d2c77842b5197f52bf8108678f67894cf440843

Score

8^/10

persistence spyware

Malware Config

Signatures

Adds Run entry to policy start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\PBJ8CHQ8R = "C:\\Program Files (x86)\\O9r54\\dzc0or5drclrr-.exe"	chkdsk.exe

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

Data from Local System
T1005

Credentials in Files
T1081
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Purchase order-077.exePurchase order-077.exechkdsk.exe

description	pid	process	target process
PID 772 set thread context of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 3644 set thread context of 2964	3644	Purchase order-077.exe	Explorer.EXE
PID 3644 set thread context of 2964	3644	Purchase order-077.exe	Explorer.EXE
PID 4032 set thread context of 2964	4032	chkdsk.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

Purchase order-077.exechkdsk.exe

pid	process
3644	Purchase order-077.exe
3644	Purchase order-077.exe
3644	Purchase order-077.exe
3644	Purchase order-077.exe
3644	Purchase order-077.exe
3644	Purchase order-077.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

Purchase order-077.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3644	Purchase order-077.exe
Token: SeDebugPrivilege	4032	chkdsk.exe
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE
Token: SeShutdownPrivilege	2964	Explorer.EXE
Token: SeCreatePagefilePrivilege	2964	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2066881839-3229799743-3576549721-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Drops file in Program Files directory 1 IoCs

Processes:

chkdsk.exe

description ioc process

File opened for modification C:\Program Files (x86)\O9r54\dzc0or5drclrr-.exe chkdsk.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\O9r54\dzc0or5drclrr-.exe	chkdsk.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Purchase order-077.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 772 wrote to memory of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 772 wrote to memory of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 772 wrote to memory of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 772 wrote to memory of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 772 wrote to memory of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 772 wrote to memory of 3644	772	Purchase order-077.exe	Purchase order-077.exe
PID 2964 wrote to memory of 4032	2964	Explorer.EXE	chkdsk.exe
PID 2964 wrote to memory of 4032	2964	Explorer.EXE	chkdsk.exe
PID 2964 wrote to memory of 4032	2964	Explorer.EXE	chkdsk.exe
PID 4032 wrote to memory of 3856	4032	chkdsk.exe	cmd.exe
PID 4032 wrote to memory of 3856	4032	chkdsk.exe	cmd.exe
PID 4032 wrote to memory of 3856	4032	chkdsk.exe	cmd.exe
PID 4032 wrote to memory of 584	4032	chkdsk.exe	cmd.exe
PID 4032 wrote to memory of 584	4032	chkdsk.exe	cmd.exe
PID 4032 wrote to memory of 584	4032	chkdsk.exe	cmd.exe
PID 4032 wrote to memory of 344	4032	chkdsk.exe	Firefox.exe
PID 4032 wrote to memory of 344	4032	chkdsk.exe	Firefox.exe
PID 4032 wrote to memory of 344	4032	chkdsk.exe	Firefox.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

Purchase order-077.exechkdsk.exe

pid	process
3644	Purchase order-077.exe
3644	Purchase order-077.exe
3644	Purchase order-077.exe
3644	Purchase order-077.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe
4032	chkdsk.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

chkdsk.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	chkdsk.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2964

C:\Users\Admin\AppData\Local\Temp\Purchase order-077.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase order-077.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:772

C:\Users\Admin\AppData\Local\Temp\Purchase order-077.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
PID:3644

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds Run entry to policy start application
- Enumerates system info in registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Modifies Internet Explorer settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- System policy modification
PID:4032

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Purchase order-077.exe"
3⤵
PID:3856

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:584

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:344

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

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

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C:\Users\Admin\AppData\Roaming\-LMATAB0\-LMlogim.jpeg

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C:\Users\Admin\AppData\Roaming\-LMATAB0\-LMlogrf.ini

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C:\Users\Admin\AppData\Roaming\-LMATAB0\-LMlogrg.ini

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C:\Users\Admin\AppData\Roaming\-LMATAB0\-LMlogri.ini

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C:\Users\Admin\AppData\Roaming\-LMATAB0\-LMlogrv.ini

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memory/344-13-0x00007FF757950000-0x00007FF7579E3000-memory.dmp

Filesize
588KB

Download
memory/344-11-0x0000000000000000-mapping.dmp

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memory/344-12-0x00007FF757950000-0x00007FF7579E3000-memory.dmp

Filesize
588KB

Download
memory/344-14-0x00007FF757950000-0x00007FF7579E3000-memory.dmp

Filesize
588KB

Download
memory/584-8-0x0000000000000000-mapping.dmp

Download
memory/3644-1-0x000000000041E2A0-mapping.dmp

Download
memory/3644-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3856-6-0x0000000000000000-mapping.dmp

Download
memory/4032-7-0x0000000005BD0000-0x0000000005C9F000-memory.dmp

Filesize
828KB

Download
memory/4032-10-0x0000000007570000-0x0000000007669000-memory.dmp

Filesize
996KB

Download
memory/4032-5-0x0000000000C80000-0x0000000000C8A000-memory.dmp

Filesize
40KB

Download
memory/4032-4-0x0000000000C80000-0x0000000000C8A000-memory.dmp

Filesize
40KB

Download
memory/4032-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads