phoenixstealer | 1c524c438438a2998e6f47513a8b639dc7f9c1ea649085bea77b2509f5e62dd5

General

Target

28166889.exe
Size

5.2MB
MD5

d6400095bffdf07603da238051f31bd4
SHA1

12d517d298cff39d493d1de9e6da6e24c0b4f5ac
SHA256

1c524c438438a2998e6f47513a8b639dc7f9c1ea649085bea77b2509f5e62dd5
SHA512

fbbdf4cbde7bcd5f859bcbb6da10e2bf892e34cba4178c1f99b150a65aeb743871709535b044904b806b68b4e2051c31445ccf4a10a26b25e192c8eb55cfa2a2

Score

10^/10

phoenixstealer evasion stealer themida trojan

Malware Config

Signatures

PhoenixStealer
PhoenixStealer is an information stealer written in the C++, it sends the stolen information to cybercriminals.
stealer phoenixstealer
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4256	dufosf7HpWmPb1dK.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	28166889.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	28166889.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	28166889.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2708-139-0x0000000000E30000-0x0000000001374000-memory.dmp	themida
behavioral2/memory/2708-136-0x0000000000E30000-0x0000000001374000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	28166889.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4980	2708	WerFault.exe	78

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	28166889.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 4256	2708	28166889.exe	79
PID 2708 wrote to memory of 4256	2708	28166889.exe	79
PID 2708 wrote to memory of 4256	2708	28166889.exe	79

C:\Users\Admin\AppData\Local\Temp\28166889.exe
"C:\Users\Admin\AppData\Local\Temp\28166889.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2708
- C:\ProgramData\dufosf7HpWmPb1dK.exe
  "C:\ProgramData\dufosf7HpWmPb1dK.exe"
  2⤵
  - Executes dropped EXE
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 1900
  2⤵
  - Program crash
  PID:4980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2708 -ip 2708
1⤵
PID:2868

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2708-138-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2708-135-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2708-137-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2708-139-0x0000000000E30000-0x0000000001374000-memory.dmp

Filesize
5.3MB

Download
memory/2708-132-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2708-136-0x0000000000E30000-0x0000000001374000-memory.dmp

Filesize
5.3MB

Download
memory/2708-140-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2708-141-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/2708-142-0x0000000005500000-0x0000000005501000-memory.dmp

Filesize
4KB

Download
memory/2708-134-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download
memory/2708-133-0x0000000076490000-0x0000000076580000-memory.dmp

Filesize
960KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads