9013e308218b70c038971d37c9ab446b81108079344e71f25e1d131487657c97

General

Target

Receipt.exe
Size

5.1MB
MD5

4d37240c2a9aab1b8dfd0aee7d418adc
SHA1

fb684fe749432d7fb74e95a26f6614362c9b26b2
SHA256

9013e308218b70c038971d37c9ab446b81108079344e71f25e1d131487657c97
SHA512

5e84c6ff15e51d044c68b01b371b94a00d9d3806ff3bb9cad2aa4446f0f14c79cd95228f13601b88b980152eb4c85f9c0a65eed09034489062d68e93afd7d5ea

Score

8^/10

spyware persistence

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

Receipt.exebvn.exeRegAsm.exe

pid process

1612 Receipt.exe
1612 Receipt.exe
1612 Receipt.exe
1896 bvn.exe
1896 bvn.exe
1896 bvn.exe
1984 RegAsm.exe
1984 RegAsm.exe

pid	process
1612	Receipt.exe
1612	Receipt.exe
1612	Receipt.exe
1896	bvn.exe
1896	bvn.exe
1896	bvn.exe
1984	RegAsm.exe
1984	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Receipt.execmd.exebvn.exe

description	pid	process	target process
PID 1612 wrote to memory of 1048	1612	Receipt.exe	cmd.exe
PID 1612 wrote to memory of 1048	1612	Receipt.exe	cmd.exe
PID 1612 wrote to memory of 1048	1612	Receipt.exe	cmd.exe
PID 1612 wrote to memory of 1048	1612	Receipt.exe	cmd.exe
PID 1048 wrote to memory of 1316	1048	cmd.exe	reg.exe
PID 1048 wrote to memory of 1316	1048	cmd.exe	reg.exe
PID 1048 wrote to memory of 1316	1048	cmd.exe	reg.exe
PID 1048 wrote to memory of 1316	1048	cmd.exe	reg.exe
PID 1612 wrote to memory of 1896	1612	Receipt.exe	bvn.exe
PID 1612 wrote to memory of 1896	1612	Receipt.exe	bvn.exe
PID 1612 wrote to memory of 1896	1612	Receipt.exe	bvn.exe
PID 1612 wrote to memory of 1896	1612	Receipt.exe	bvn.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe
PID 1896 wrote to memory of 1984	1896	bvn.exe	RegAsm.exe

Loads dropped DLL 2 IoCs

Processes:

bvn.exeRegAsm.exe

pid process

1896 bvn.exe
1984 RegAsm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bvn.exe

description pid process target process

PID 1896 set thread context of 1984 1896 bvn.exe RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1984 RegAsm.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
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Receipt.exebvn.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 1612 Receipt.exe
Token: SeDebugPrivilege 1896 bvn.exe
Token: SeDebugPrivilege 1984 RegAsm.exe
Executes dropped EXE 2 IoCs

Processes:

bvn.exeRegAsm.exe

pid process

1896 bvn.exe
1984 RegAsm.exe

pid	process
1896	bvn.exe
1984	RegAsm.exe

description	pid	process	target process
PID 1896 set thread context of 1984	1896	bvn.exe	RegAsm.exe

pid	process
1984	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1612	Receipt.exe
Token: SeDebugPrivilege	1896	bvn.exe
Token: SeDebugPrivilege	1984	RegAsm.exe

pid	process
1896	bvn.exe
1984	RegAsm.exe

Adds Run entry to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\cash = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\Desktop\\bvn.exe"	reg.exe

C:\Users\Admin\AppData\Local\Temp\Receipt.exe
"C:\Users\Admin\AppData\Local\Temp\Receipt.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
PID:1612

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v cash /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\bvn.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v cash /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\bvn.exe"
3⤵
- Adds Run entry to start application
PID:1316

C:\Users\Admin\Desktop\bvn.exe
"C:\Users\Admin\Desktop\bvn.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Executes dropped EXE
PID:1896

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of AdjustPrivilegeToken
- Executes dropped EXE
PID:1984

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

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

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C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

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C:\Users\Admin\Desktop\bvn.exe

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C:\Users\Admin\Desktop\bvn.exe

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\Users\Admin\AppData\Local\Temp\RegAsm.exe

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\Users\Admin\AppData\Local\Temp\RegAsm.exe

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memory/1048-3-0x0000000000000000-mapping.dmp

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memory/1316-4-0x0000000000000000-mapping.dmp

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memory/1612-1-0x0000000000000000-0x0000000000000000-disk.dmp

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memory/1896-5-0x0000000000000000-mapping.dmp

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memory/1984-16-0x000000000044B84E-mapping.dmp

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memory/1984-18-0x0000000000090000-0x00000000000E0000-memory.dmp

Filesize
320KB

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memory/1984-19-0x0000000000090000-0x00000000000E0000-memory.dmp

Filesize
320KB

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Analysis

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