asyncrat | 09f0f7270df05c3dae84defc043db7b411a5f8610ea93a2c85dd98c7a927c47a

Analysis

max time kernel
146s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13-05-2024 13:41

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General

Target

2aaea866166221511fbd56b52f0cef64.exe
Size

45KB
MD5

2aaea866166221511fbd56b52f0cef64
SHA1

58fb45e8808e6b523ba942088a45a49e780e6f2f
SHA256

09f0f7270df05c3dae84defc043db7b411a5f8610ea93a2c85dd98c7a927c47a
SHA512

de4029ade64782692fd4fae84f60d74587b73220f180d4b2b362c0670d980f2a04ecd1ecca0afafb8fad43f3fb11eafdade3002bba1686137a55a74fe50fc379
SSDEEP

768:NuLN+TwQhclWUlNzWmo2qDMKjPGaG6PIyzjbFgX3iN8F0S6d+Aj6gBDZOx:NuLN+Twip2lKTkDy3bCXSNS2Rj62dOx

Score

10^/10

asyncrat xmrig zgrat default execution miner persistence rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

94.228.162.82:6606

94.228.162.82:7707

94.228.162.82:8808

Mutex

nZrC1RL7rHnC

Attributes

delay
3
install
true
install_file
appBroker.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Detect ZGRat V1 2 IoCs

resource	yara_rule
behavioral1/memory/2648-34-0x0000000005620000-0x0000000005682000-memory.dmp	family_zgrat_v1
behavioral1/memory/2648-89-0x0000000006780000-0x000000000681C000-memory.dmp	family_zgrat_v1

XMRig Miner payload 2 IoCs

miner

resource	yara_rule
behavioral1/files/0x0007000000015d07-64.dat	family_xmrig
behavioral1/files/0x0007000000015d07-64.dat	xmrig

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
miner xmrig

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000c00000001269e-13.dat	family_asyncrat

Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
2648	appBroker.exe
2324	wmdlfg.exe
1536	xmrig.exe

Loads dropped DLL 4 IoCs

pid	Process
2140	cmd.exe
1820	powershell.exe
1672	Process not Found
1704	cmd.exe

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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\XMRig = "C:\\Users\\Admin\\AppData\\Local\\Temp\\XMRig"	wmdlfg.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Start PowerShell.

execution

PowerShell

T1059.001

pid	Process
1820	powershell.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2576	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2664	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2524	2aaea866166221511fbd56b52f0cef64.exe
2524	2aaea866166221511fbd56b52f0cef64.exe
1820	powershell.exe
2648	appBroker.exe
1820	powershell.exe
1820	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	2aaea866166221511fbd56b52f0cef64.exe
Token: SeDebugPrivilege	2648	appBroker.exe
Token: SeDebugPrivilege	1820	powershell.exe
Token: SeLockMemoryPrivilege	1536	xmrig.exe
Token: SeLockMemoryPrivilege	1536	xmrig.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1536	xmrig.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2880	2524	2aaea866166221511fbd56b52f0cef64.exe	28
PID 2524 wrote to memory of 2880	2524	2aaea866166221511fbd56b52f0cef64.exe	28
PID 2524 wrote to memory of 2880	2524	2aaea866166221511fbd56b52f0cef64.exe	28
PID 2524 wrote to memory of 2880	2524	2aaea866166221511fbd56b52f0cef64.exe	28
PID 2524 wrote to memory of 2140	2524	2aaea866166221511fbd56b52f0cef64.exe	30
PID 2524 wrote to memory of 2140	2524	2aaea866166221511fbd56b52f0cef64.exe	30
PID 2524 wrote to memory of 2140	2524	2aaea866166221511fbd56b52f0cef64.exe	30
PID 2524 wrote to memory of 2140	2524	2aaea866166221511fbd56b52f0cef64.exe	30
PID 2880 wrote to memory of 2576	2880	cmd.exe	32
PID 2880 wrote to memory of 2576	2880	cmd.exe	32
PID 2880 wrote to memory of 2576	2880	cmd.exe	32
PID 2880 wrote to memory of 2576	2880	cmd.exe	32
PID 2140 wrote to memory of 2664	2140	cmd.exe	33
PID 2140 wrote to memory of 2664	2140	cmd.exe	33
PID 2140 wrote to memory of 2664	2140	cmd.exe	33
PID 2140 wrote to memory of 2664	2140	cmd.exe	33
PID 2140 wrote to memory of 2648	2140	cmd.exe	34
PID 2140 wrote to memory of 2648	2140	cmd.exe	34
PID 2140 wrote to memory of 2648	2140	cmd.exe	34
PID 2140 wrote to memory of 2648	2140	cmd.exe	34
PID 2648 wrote to memory of 2692	2648	appBroker.exe	36
PID 2648 wrote to memory of 2692	2648	appBroker.exe	36
PID 2648 wrote to memory of 2692	2648	appBroker.exe	36
PID 2648 wrote to memory of 2692	2648	appBroker.exe	36
PID 2692 wrote to memory of 1820	2692	cmd.exe	38
PID 2692 wrote to memory of 1820	2692	cmd.exe	38
PID 2692 wrote to memory of 1820	2692	cmd.exe	38
PID 2692 wrote to memory of 1820	2692	cmd.exe	38
PID 1820 wrote to memory of 2324	1820	powershell.exe	39
PID 1820 wrote to memory of 2324	1820	powershell.exe	39
PID 1820 wrote to memory of 2324	1820	powershell.exe	39
PID 1820 wrote to memory of 2324	1820	powershell.exe	39
PID 2324 wrote to memory of 3016	2324	wmdlfg.exe	42
PID 2324 wrote to memory of 3016	2324	wmdlfg.exe	42
PID 2324 wrote to memory of 3016	2324	wmdlfg.exe	42
PID 3016 wrote to memory of 1704	3016	cmd.exe	43
PID 3016 wrote to memory of 1704	3016	cmd.exe	43
PID 3016 wrote to memory of 1704	3016	cmd.exe	43
PID 1704 wrote to memory of 1536	1704	cmd.exe	44
PID 1704 wrote to memory of 1536	1704	cmd.exe	44
PID 1704 wrote to memory of 1536	1704	cmd.exe	44

C:\Users\Admin\AppData\Local\Temp\2aaea866166221511fbd56b52f0cef64.exe
"C:\Users\Admin\AppData\Local\Temp\2aaea866166221511fbd56b52f0cef64.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "appBroker" /tr '"C:\Users\Admin\AppData\Roaming\appBroker.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "appBroker" /tr '"C:\Users\Admin\AppData\Roaming\appBroker.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2576
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3350.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2664
- - C:\Users\Admin\AppData\Roaming\appBroker.exe
    "C:\Users\Admin\AppData\Roaming\appBroker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2648
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\wmdlfg.exe"' & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2692
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\wmdlfg.exe"'
        5⤵
        Loads dropped DLL
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1820
      - C:\Users\Admin\AppData\Local\Temp\wmdlfg.exe
        
        "C:\Users\Admin\AppData\Local\Temp\wmdlfg.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of WriteProcessMemory
        
        PID:2324
        
        C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c cmd.exe /C "C:\Users\Admin\AppData\Local\Temp\xmrig.exe"
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:3016
        
        C:\Windows\system32\cmd.exe
        
        cmd.exe /C "C:\Users\Admin\AppData\Local\Temp\xmrig.exe"
        8⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:1704
        
        C:\Users\Admin\AppData\Local\Temp\xmrig.exe
        
        C:\Users\Admin\AppData\Local\Temp\xmrig.exe
        9⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of FindShellTrayWindow
        
        PID:1536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

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

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar59AB.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3350.tmp.bat

Filesize
153B

MD5
697393c0e44380aecf630ee27f61c958

SHA1
8eaf75dc9e5b25e05f9e00dc3e5079560be4d244

SHA256
fee67e30f97a27f4cf8e97b0117fb68493c5dbb9e535fb377e6afdf3368e6f76

SHA512
df00e788440e7dd7ba2c0eab705552a8bd4f8a057232c98b1ebd26e0516f17f9fa4d911ecadf469b4fd4badee359ff475a2341f4b407a99a30791f151fe362c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\wmdlfg.exe

Filesize
897KB

MD5
35c5c01f331c3cceb82c6ace1c98c0af

SHA1
93057d4839801cd9129e001db49d51670fe03f82

SHA256
3e36c74c4fa98e8b91cbcdb2bd4a58a9fc4719b118de6cb16c2b14ff9206ad6e

SHA512
04103379e9bb7e3b0b67320e2092500afe0f774cbca83d38190a548bbff28f514c305239223805ecb3cce416ef2d322a8eed28063ccbf2964b325b2b49a30653

Download Submit
\Users\Admin\AppData\Local\Temp\xmrig.exe

Filesize
1.4MB

MD5
3866b487c4ed4865655a2e60b899bb7f

SHA1
72dc92d5b1ddafb3e5b35dc4212b58e838ffc491

SHA256
c55a5e0c9f4acbcbfd11886aef71ec4ccf66ed0197710e5f82af1ff8e043207d

SHA512
1d1d61b0ba9293c716af2ce292f34357a7bb4dd3e3e78f4a04ab4a04419f7bc247926bb8e49ad322b02a2cf2389aeff33155bc878699468fcf51b0e10f0ac8ba

Download Submit
\Users\Admin\AppData\Roaming\appBroker.exe

Filesize
45KB

MD5
2aaea866166221511fbd56b52f0cef64

SHA1
58fb45e8808e6b523ba942088a45a49e780e6f2f

SHA256
09f0f7270df05c3dae84defc043db7b411a5f8610ea93a2c85dd98c7a927c47a

SHA512
de4029ade64782692fd4fae84f60d74587b73220f180d4b2b362c0670d980f2a04ecd1ecca0afafb8fad43f3fb11eafdade3002bba1686137a55a74fe50fc379

Download Submit
memory/2324-67-0x000000013FCA0000-0x000000013FD87000-memory.dmp

Filesize
924KB

Download
memory/2524-11-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-2-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-1-0x0000000000EB0000-0x0000000000EC2000-memory.dmp

Filesize
72KB

Download
memory/2524-0-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/2648-34-0x0000000005620000-0x0000000005682000-memory.dmp

Filesize
392KB

Download
memory/2648-16-0x0000000000F70000-0x0000000000F82000-memory.dmp

Filesize
72KB

Download
memory/2648-89-0x0000000006780000-0x000000000681C000-memory.dmp

Filesize
624KB

Download
memory/2648-110-0x0000000000F30000-0x0000000000F38000-memory.dmp

Filesize
32KB

Download
memory/2648-112-0x0000000000F60000-0x0000000000F6A000-memory.dmp

Filesize
40KB

Download
memory/2648-111-0x0000000005D00000-0x0000000005D40000-memory.dmp

Filesize
256KB

Download