aurora | 5ec2cb39e7538c4c2eaedcd2c2ce1ea79665260e14ff5b6579e33829c06c0235

Analysis

max time kernel
46s
max time network
143s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
26/01/2023, 22:08

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General

Target

tmp780A.tmp.exe
Size

4.0MB
MD5

58f86d3f8a1f981a7c7bf541c3bc787b
SHA1

a6b43c84c1b79551b39fc7c589deec969de84227
SHA256

5ec2cb39e7538c4c2eaedcd2c2ce1ea79665260e14ff5b6579e33829c06c0235
SHA512

88dd8807bbc2ad6f93eacc729489d4a859edf310becfafb788c69de80b716780dde739604d53656be8cbec160c940392d24344d2737ff9d25e064f29989b7719
SSDEEP

98304:j5p0FLvYwv0qdE+T/6dBVeAhy5zhLaHtZO3jB9L0l3nHQvvw4:j5KpvNJHj6dXEnLuZOr0Znw

Score

10^/10

aurora purecrypter downloader loader spyware stealer

Malware Config

Extracted

Family

aurora

79.137.133.225:8081

Signatures

Aurora
Aurora is a crypto wallet stealer written in Golang.
stealer aurora

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/1764-55-0x0000000004E30000-0x0000000005234000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1764 set thread context of 680	1764	tmp780A.tmp.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2036	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	tmp780A.tmp.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeIncreaseQuotaPrivilege	1200	wmic.exe
Token: SeSecurityPrivilege	1200	wmic.exe
Token: SeTakeOwnershipPrivilege	1200	wmic.exe
Token: SeLoadDriverPrivilege	1200	wmic.exe
Token: SeSystemProfilePrivilege	1200	wmic.exe
Token: SeSystemtimePrivilege	1200	wmic.exe
Token: SeProfSingleProcessPrivilege	1200	wmic.exe
Token: SeIncBasePriorityPrivilege	1200	wmic.exe
Token: SeCreatePagefilePrivilege	1200	wmic.exe
Token: SeBackupPrivilege	1200	wmic.exe
Token: SeRestorePrivilege	1200	wmic.exe
Token: SeShutdownPrivilege	1200	wmic.exe
Token: SeDebugPrivilege	1200	wmic.exe
Token: SeSystemEnvironmentPrivilege	1200	wmic.exe
Token: SeRemoteShutdownPrivilege	1200	wmic.exe
Token: SeUndockPrivilege	1200	wmic.exe
Token: SeManageVolumePrivilege	1200	wmic.exe
Token: 33	1200	wmic.exe
Token: 34	1200	wmic.exe
Token: 35	1200	wmic.exe
Token: SeIncreaseQuotaPrivilege	1200	wmic.exe
Token: SeSecurityPrivilege	1200	wmic.exe
Token: SeTakeOwnershipPrivilege	1200	wmic.exe
Token: SeLoadDriverPrivilege	1200	wmic.exe
Token: SeSystemProfilePrivilege	1200	wmic.exe
Token: SeSystemtimePrivilege	1200	wmic.exe
Token: SeProfSingleProcessPrivilege	1200	wmic.exe
Token: SeIncBasePriorityPrivilege	1200	wmic.exe
Token: SeCreatePagefilePrivilege	1200	wmic.exe
Token: SeBackupPrivilege	1200	wmic.exe
Token: SeRestorePrivilege	1200	wmic.exe
Token: SeShutdownPrivilege	1200	wmic.exe
Token: SeDebugPrivilege	1200	wmic.exe
Token: SeSystemEnvironmentPrivilege	1200	wmic.exe
Token: SeRemoteShutdownPrivilege	1200	wmic.exe
Token: SeUndockPrivilege	1200	wmic.exe
Token: SeManageVolumePrivilege	1200	wmic.exe
Token: 33	1200	wmic.exe
Token: 34	1200	wmic.exe
Token: 35	1200	wmic.exe
Token: SeIncreaseQuotaPrivilege	1540	WMIC.exe
Token: SeSecurityPrivilege	1540	WMIC.exe
Token: SeTakeOwnershipPrivilege	1540	WMIC.exe
Token: SeLoadDriverPrivilege	1540	WMIC.exe
Token: SeSystemProfilePrivilege	1540	WMIC.exe
Token: SeSystemtimePrivilege	1540	WMIC.exe
Token: SeProfSingleProcessPrivilege	1540	WMIC.exe
Token: SeIncBasePriorityPrivilege	1540	WMIC.exe
Token: SeCreatePagefilePrivilege	1540	WMIC.exe
Token: SeBackupPrivilege	1540	WMIC.exe
Token: SeRestorePrivilege	1540	WMIC.exe
Token: SeShutdownPrivilege	1540	WMIC.exe
Token: SeDebugPrivilege	1540	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1540	WMIC.exe
Token: SeRemoteShutdownPrivilege	1540	WMIC.exe
Token: SeUndockPrivilege	1540	WMIC.exe
Token: SeManageVolumePrivilege	1540	WMIC.exe
Token: 33	1540	WMIC.exe
Token: 34	1540	WMIC.exe
Token: 35	1540	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1540	WMIC.exe
Token: SeSecurityPrivilege	1540	WMIC.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2036	1764	tmp780A.tmp.exe	28
PID 1764 wrote to memory of 2036	1764	tmp780A.tmp.exe	28
PID 1764 wrote to memory of 2036	1764	tmp780A.tmp.exe	28
PID 1764 wrote to memory of 2036	1764	tmp780A.tmp.exe	28
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 1764 wrote to memory of 680	1764	tmp780A.tmp.exe	31
PID 680 wrote to memory of 1200	680	tmp780A.tmp.exe	32
PID 680 wrote to memory of 1200	680	tmp780A.tmp.exe	32
PID 680 wrote to memory of 1200	680	tmp780A.tmp.exe	32
PID 680 wrote to memory of 1200	680	tmp780A.tmp.exe	32
PID 680 wrote to memory of 1056	680	tmp780A.tmp.exe	34
PID 680 wrote to memory of 1056	680	tmp780A.tmp.exe	34
PID 680 wrote to memory of 1056	680	tmp780A.tmp.exe	34
PID 680 wrote to memory of 1056	680	tmp780A.tmp.exe	34
PID 1056 wrote to memory of 1540	1056	cmd.exe	36
PID 1056 wrote to memory of 1540	1056	cmd.exe	36
PID 1056 wrote to memory of 1540	1056	cmd.exe	36
PID 1056 wrote to memory of 1540	1056	cmd.exe	36
PID 680 wrote to memory of 1616	680	tmp780A.tmp.exe	37
PID 680 wrote to memory of 1616	680	tmp780A.tmp.exe	37
PID 680 wrote to memory of 1616	680	tmp780A.tmp.exe	37
PID 680 wrote to memory of 1616	680	tmp780A.tmp.exe	37
PID 1616 wrote to memory of 1532	1616	cmd.exe	39
PID 1616 wrote to memory of 1532	1616	cmd.exe	39
PID 1616 wrote to memory of 1532	1616	cmd.exe	39
PID 1616 wrote to memory of 1532	1616	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\tmp780A.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp780A.tmp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2036
- C:\Users\Admin\AppData\Local\Temp\tmp780A.tmp.exe
  C:\Users\Admin\AppData\Local\Temp\tmp780A.tmp.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:680
- - C:\Windows\SysWOW64\Wbem\wmic.exe
    wmic os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1200
- - C:\Windows\SysWOW64\cmd.exe
    cmd /C "wmic path win32_VideoController get name"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1056
  - - C:\Windows\SysWOW64\Wbem\WMIC.exe
      wmic path win32_VideoController get name
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1540
- - C:\Windows\SysWOW64\cmd.exe
    cmd /C "wmic cpu get name"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1616
  - - C:\Windows\SysWOW64\Wbem\WMIC.exe
      wmic cpu get name
      4⤵
      PID:1532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/680-78-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-77-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-84-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-70-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-71-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-73-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-74-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-63-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-64-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-66-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/680-68-0x0000000000400000-0x0000000000876000-memory.dmp

Filesize
4.5MB

Download
memory/1764-55-0x0000000004E30000-0x0000000005234000-memory.dmp

Filesize
4.0MB

Download
memory/1764-62-0x00000000060A0000-0x0000000006292000-memory.dmp

Filesize
1.9MB

Download
memory/1764-54-0x00000000010E0000-0x00000000014E6000-memory.dmp

Filesize
4.0MB

Download
memory/1764-56-0x0000000075E81000-0x0000000075E83000-memory.dmp

Filesize
8KB

Download
memory/2036-61-0x000000006F560000-0x000000006FB0B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-60-0x000000006F560000-0x000000006FB0B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-59-0x000000006F560000-0x000000006FB0B000-memory.dmp

Filesize
5.7MB

Download