b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1

General

Target

b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
Size

671KB
MD5

3c90f4ff64bf3dbe5796f9efc644b003
SHA1

01754640469b082c446753c83d6caf680e955573
SHA256

b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1
SHA512

3092d6f477ce4db8696389b608a698dcdfd617db58a1b54dd15c9f3e3012ffb875fc3700faa16c966d657a16b26373b0a371b5b56e3369c5ef28fa2ec8855e74
SSDEEP

12288:VCuW+5P94e2ZJr85tFhDo2SwILq+n0trsXp/lzcJlFz39gd0FWYupymPgK2Sbw34:wuW+H4e2ZJrK6xLq+nwrstdcXFz39duN

Score

8^/10

upx

Malware Config

Signatures

Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
4896	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
2988	opera_installer_20221104081300.exe
4360	opera_installer_20221104081300.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4800-132-0x0000000000AF0000-0x0000000000C3B000-memory.dmp	upx
behavioral2/files/0x0006000000022e17-138.dat	upx
behavioral2/memory/4896-139-0x0000000000D50000-0x0000000000E9B000-memory.dmp	upx
behavioral2/memory/1928-140-0x0000000000AF0000-0x0000000000C3B000-memory.dmp	upx
behavioral2/memory/4800-145-0x0000000000AF0000-0x0000000000C3B000-memory.dmp	upx

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Opera	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 1928	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	82
PID 4800 wrote to memory of 1928	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	82
PID 4800 wrote to memory of 1928	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	82
PID 4800 wrote to memory of 4896	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	83
PID 4800 wrote to memory of 4896	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	83
PID 4800 wrote to memory of 4896	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	83
PID 4800 wrote to memory of 2988	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	87
PID 4800 wrote to memory of 2988	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	87
PID 4800 wrote to memory of 2988	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	87
PID 4800 wrote to memory of 4360	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	88
PID 4800 wrote to memory of 4360	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	88
PID 4800 wrote to memory of 4360	4800	b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe	88

C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
"C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe"
1⤵
- Enumerates connected drives
- Drops file in Program Files directory
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
  "C:\Users\Admin\AppData\Local\Temp\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe" --crash-reporter-parent-id=4800
  2⤵
  PID:1928
- C:\Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe
  "C:\Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe" --version
  2⤵
  - Executes dropped EXE
  PID:4896
- C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104081300.exe
  "C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104081300.exe" --internal-version
  2⤵
  - Executes dropped EXE
  PID:2988
- C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104081300.exe
  "C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104081300.exe" --stream
  2⤵
  - Executes dropped EXE
  PID:4360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Opera Installer\b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1.exe

Filesize
671KB

MD5
3c90f4ff64bf3dbe5796f9efc644b003

SHA1
01754640469b082c446753c83d6caf680e955573

SHA256
b494c0a123d0c00e92f374ea7f9e871c67498f57cc49017009e9ef9fee7d8df1

SHA512
3092d6f477ce4db8696389b608a698dcdfd617db58a1b54dd15c9f3e3012ffb875fc3700faa16c966d657a16b26373b0a371b5b56e3369c5ef28fa2ec8855e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104081300.exe

Filesize
35.9MB

MD5
36f8b3bb2ba2194db065637af8bf4453

SHA1
1262df44dcc47e5a81f17e559252247f9f35b914

SHA256
ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

SHA512
7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\Opera Installer\opera_installer_20221104081300.exe

Filesize
35.9MB

MD5
36f8b3bb2ba2194db065637af8bf4453

SHA1
1262df44dcc47e5a81f17e559252247f9f35b914

SHA256
ac4dfaed56f4a4259befff7471d8d297e3d5c13951aad6b64280830dd36d1724

SHA512
7c22d94fcb5cba4669d53929a73240879875c26cfa43bf9135c1772e024fe8991618150fa26550e89fdb5a40e6e642d80ab81c523dba29f441c1b389a9fc37c6

Download Submit
memory/1928-140-0x0000000000AF0000-0x0000000000C3B000-memory.dmp

Filesize
1.3MB

Download
memory/4800-135-0x0000000000AE0000-0x0000000000AE6000-memory.dmp

Filesize
24KB

Download
memory/4800-136-0x0000000000AE0000-0x0000000000AE6000-memory.dmp

Filesize
24KB

Download
memory/4800-132-0x0000000000AF0000-0x0000000000C3B000-memory.dmp

Filesize
1.3MB

Download
memory/4800-134-0x0000000000AE0000-0x0000000000AE6000-memory.dmp

Filesize
24KB

Download
memory/4800-145-0x0000000000AF0000-0x0000000000C3B000-memory.dmp

Filesize
1.3MB

Download
memory/4896-139-0x0000000000D50000-0x0000000000E9B000-memory.dmp

Filesize
1.3MB

Download

Analysis

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