asyncrat | 1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d

Analysis

max time kernel
117s
max time network
157s
platform
windows7_x64
resource
win7-en-20211208
submitted
25-01-2022 08:36

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General

Target

Faktura ref. # IRQ-21-07778.exe
Size

697KB
MD5

d2c4ad3484a598f0848a7947fc45175f
SHA1

2c7807352b5ece76d1e0364acdcfce3bc2cd9b72
SHA256

1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d
SHA512

366f15e329de3e504cc2a91e17129377b07815f19cd849e30d776eadac0ad3d57f5b8b5182bfc2bd80ba99839903f794649310c21f46c3447662d762b1288b5e

Score

10^/10

asyncrat default rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

89.238.150.43:57095

Mutex

AsyncMutex_6SI8OkPnk

Attributes

anti_vm
false
bsod
false
delay
3
install
true
install_file
chromeex.exe
install_folder
%Temp%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/392-63-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/392-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/392-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/392-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

chromeex.exechromeex.exe

pid process

968 chromeex.exe
956 chromeex.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exechromeex.exe

pid process

608 cmd.exe
968 chromeex.exe

pid	process
968	chromeex.exe
956	chromeex.exe

pid	process
608	cmd.exe
968	chromeex.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Faktura ref. # IRQ-21-07778.exechromeex.exe

description	pid	process	target process
PID 1624 set thread context of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 968 set thread context of 956	968	chromeex.exe	chromeex.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

1272 schtasks.exe
988 schtasks.exe
1592 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1608 timeout.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeFaktura ref. # IRQ-21-07778.exepowershell.exe

pid process

568 powershell.exe
392 Faktura ref. # IRQ-21-07778.exe
392 Faktura ref. # IRQ-21-07778.exe
392 Faktura ref. # IRQ-21-07778.exe
1728 powershell.exe

pid	process
1272	schtasks.exe
988	schtasks.exe
1592	schtasks.exe

pid	process
1608	timeout.exe

pid	process
568	powershell.exe
392	Faktura ref. # IRQ-21-07778.exe
392	Faktura ref. # IRQ-21-07778.exe
392	Faktura ref. # IRQ-21-07778.exe
1728	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

powershell.exeFaktura ref. # IRQ-21-07778.exepowershell.exechromeex.exe

description	pid	process
Token: SeDebugPrivilege	568	powershell.exe
Token: SeDebugPrivilege	392	Faktura ref. # IRQ-21-07778.exe
Token: SeDebugPrivilege	1728	powershell.exe
Token: SeDebugPrivilege	956	chromeex.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

Faktura ref. # IRQ-21-07778.exeFaktura ref. # IRQ-21-07778.execmd.execmd.exechromeex.exe

description	pid	process	target process
PID 1624 wrote to memory of 568	1624	Faktura ref. # IRQ-21-07778.exe	powershell.exe
PID 1624 wrote to memory of 568	1624	Faktura ref. # IRQ-21-07778.exe	powershell.exe
PID 1624 wrote to memory of 568	1624	Faktura ref. # IRQ-21-07778.exe	powershell.exe
PID 1624 wrote to memory of 568	1624	Faktura ref. # IRQ-21-07778.exe	powershell.exe
PID 1624 wrote to memory of 1272	1624	Faktura ref. # IRQ-21-07778.exe	schtasks.exe
PID 1624 wrote to memory of 1272	1624	Faktura ref. # IRQ-21-07778.exe	schtasks.exe
PID 1624 wrote to memory of 1272	1624	Faktura ref. # IRQ-21-07778.exe	schtasks.exe
PID 1624 wrote to memory of 1272	1624	Faktura ref. # IRQ-21-07778.exe	schtasks.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 1624 wrote to memory of 392	1624	Faktura ref. # IRQ-21-07778.exe	Faktura ref. # IRQ-21-07778.exe
PID 392 wrote to memory of 1544	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 1544	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 1544	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 1544	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 608	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 608	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 608	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 392 wrote to memory of 608	392	Faktura ref. # IRQ-21-07778.exe	cmd.exe
PID 1544 wrote to memory of 988	1544	cmd.exe	schtasks.exe
PID 1544 wrote to memory of 988	1544	cmd.exe	schtasks.exe
PID 1544 wrote to memory of 988	1544	cmd.exe	schtasks.exe
PID 1544 wrote to memory of 988	1544	cmd.exe	schtasks.exe
PID 608 wrote to memory of 1608	608	cmd.exe	timeout.exe
PID 608 wrote to memory of 1608	608	cmd.exe	timeout.exe
PID 608 wrote to memory of 1608	608	cmd.exe	timeout.exe
PID 608 wrote to memory of 1608	608	cmd.exe	timeout.exe
PID 608 wrote to memory of 968	608	cmd.exe	chromeex.exe
PID 608 wrote to memory of 968	608	cmd.exe	chromeex.exe
PID 608 wrote to memory of 968	608	cmd.exe	chromeex.exe
PID 608 wrote to memory of 968	608	cmd.exe	chromeex.exe
PID 968 wrote to memory of 1728	968	chromeex.exe	powershell.exe
PID 968 wrote to memory of 1728	968	chromeex.exe	powershell.exe
PID 968 wrote to memory of 1728	968	chromeex.exe	powershell.exe
PID 968 wrote to memory of 1728	968	chromeex.exe	powershell.exe
PID 968 wrote to memory of 1592	968	chromeex.exe	schtasks.exe
PID 968 wrote to memory of 1592	968	chromeex.exe	schtasks.exe
PID 968 wrote to memory of 1592	968	chromeex.exe	schtasks.exe
PID 968 wrote to memory of 1592	968	chromeex.exe	schtasks.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe
PID 968 wrote to memory of 956	968	chromeex.exe	chromeex.exe

C:\Users\Admin\AppData\Local\Temp\Faktura ref. # IRQ-21-07778.exe
"C:\Users\Admin\AppData\Local\Temp\Faktura ref. # IRQ-21-07778.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1624

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\uSbiuPFvZX.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:568

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uSbiuPFvZX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B9D.tmp"
2⤵
- Creates scheduled task(s)
PID:1272

C:\Users\Admin\AppData\Local\Temp\Faktura ref. # IRQ-21-07778.exe
"C:\Users\Admin\AppData\Local\Temp\Faktura ref. # IRQ-21-07778.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:392

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chromeex" /tr '"C:\Users\Admin\AppData\Local\Temp\chromeex.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1544

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "chromeex" /tr '"C:\Users\Admin\AppData\Local\Temp\chromeex.exe"'
4⤵
- Creates scheduled task(s)
PID:988

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA515.tmp.bat""
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:608

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:1608

C:\Users\Admin\AppData\Local\Temp\chromeex.exe
"C:\Users\Admin\AppData\Local\Temp\chromeex.exe"
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\uSbiuPFvZX.exe"
5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1728

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uSbiuPFvZX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp421F.tmp"
5⤵
- Creates scheduled task(s)
PID:1592

C:\Users\Admin\AppData\Local\Temp\chromeex.exe
"C:\Users\Admin\AppData\Local\Temp\chromeex.exe"
5⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\chromeex.exe
MD5
d2c4ad3484a598f0848a7947fc45175f

SHA1
2c7807352b5ece76d1e0364acdcfce3bc2cd9b72

SHA256
1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d

SHA512
366f15e329de3e504cc2a91e17129377b07815f19cd849e30d776eadac0ad3d57f5b8b5182bfc2bd80ba99839903f794649310c21f46c3447662d762b1288b5e

Download Submit
C:\Users\Admin\AppData\Local\Temp\chromeex.exe
MD5
d2c4ad3484a598f0848a7947fc45175f

SHA1
2c7807352b5ece76d1e0364acdcfce3bc2cd9b72

SHA256
1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d

SHA512
366f15e329de3e504cc2a91e17129377b07815f19cd849e30d776eadac0ad3d57f5b8b5182bfc2bd80ba99839903f794649310c21f46c3447662d762b1288b5e

Download Submit
C:\Users\Admin\AppData\Local\Temp\chromeex.exe
MD5
d2c4ad3484a598f0848a7947fc45175f

SHA1
2c7807352b5ece76d1e0364acdcfce3bc2cd9b72

SHA256
1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d

SHA512
366f15e329de3e504cc2a91e17129377b07815f19cd849e30d776eadac0ad3d57f5b8b5182bfc2bd80ba99839903f794649310c21f46c3447662d762b1288b5e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp421F.tmp
MD5
5085e4ffc0a7fbcacc4bbb2f3561688a

SHA1
2d53e470e5345df36c80f22168947655d4d4134a

SHA256
d57312d171e9fe44cd2d29e868a30cda1e790a8ef0ab2dcabc840f0ea92a16cf

SHA512
b8b9576fb2ecd18dd32acd4390edf020c9622ab6aabc9161a00f73d514da35aa8022d591e85afed22391cf1858e4785239a9dd4adc9a31a7ad9bf59e71340d1a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8B9D.tmp
MD5
5085e4ffc0a7fbcacc4bbb2f3561688a

SHA1
2d53e470e5345df36c80f22168947655d4d4134a

SHA256
d57312d171e9fe44cd2d29e868a30cda1e790a8ef0ab2dcabc840f0ea92a16cf

SHA512
b8b9576fb2ecd18dd32acd4390edf020c9622ab6aabc9161a00f73d514da35aa8022d591e85afed22391cf1858e4785239a9dd4adc9a31a7ad9bf59e71340d1a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA515.tmp.bat
MD5
a20399caeccea5a8aa1d71791862f122

SHA1
61660c7ed81a10c5c73120a37f4a5d6ea26df053

SHA256
51f65aa0313a238cc2baba323814743340e7631890e089e211c7d204f5bfaf03

SHA512
dad6559cd617d1989872769183004be90392e80c7af60f446dc059e205e0a3b78d392332756db698852fa40835311f0cc6e7d178cf28456f54bfe84e3d67d7b7

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
MD5
0069da41edea4cce099a288475364d2b

SHA1
3602dfcaa64da16eab4a1787ae93b04867e748b8

SHA256
2ca61ca89c10d0d6d9487fc125edad5360a51c148c1dda14cc728b200aeb2d1a

SHA512
1592c5e5d02723f71e57b24b091d04b9be8799c147007a2cc8b28693c995e1f235e0313c9cfd22dd1be9453c49d97b06660d7243180b319363fedb3243911a3b

Download Submit
\Users\Admin\AppData\Local\Temp\chromeex.exe
MD5
d2c4ad3484a598f0848a7947fc45175f

SHA1
2c7807352b5ece76d1e0364acdcfce3bc2cd9b72

SHA256
1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d

SHA512
366f15e329de3e504cc2a91e17129377b07815f19cd849e30d776eadac0ad3d57f5b8b5182bfc2bd80ba99839903f794649310c21f46c3447662d762b1288b5e

Download Submit
\Users\Admin\AppData\Local\Temp\chromeex.exe
MD5
d2c4ad3484a598f0848a7947fc45175f

SHA1
2c7807352b5ece76d1e0364acdcfce3bc2cd9b72

SHA256
1b662d7015e25e2eba4e7b535732df5310c28ddd80797c260eebadfed1a1197d

SHA512
366f15e329de3e504cc2a91e17129377b07815f19cd849e30d776eadac0ad3d57f5b8b5182bfc2bd80ba99839903f794649310c21f46c3447662d762b1288b5e

Download Submit
memory/392-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/392-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/392-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/392-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/392-68-0x0000000002510000-0x0000000004610000-memory.dmp

Filesize
33.0MB

Download
memory/392-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/392-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/568-71-0x0000000002252000-0x0000000002254000-memory.dmp

Filesize
8KB

Download
memory/568-70-0x0000000002250000-0x0000000002251000-memory.dmp

Filesize
4KB

Download
memory/568-69-0x0000000002251000-0x0000000002252000-memory.dmp

Filesize
4KB

Download
memory/956-96-0x0000000004E20000-0x0000000004E21000-memory.dmp

Filesize
4KB

Download
memory/968-78-0x0000000004C80000-0x0000000004C81000-memory.dmp

Filesize
4KB

Download
memory/968-76-0x0000000000CC0000-0x0000000000D74000-memory.dmp

Filesize
720KB

Download
memory/968-79-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/1624-58-0x0000000005540000-0x00000000055C0000-memory.dmp

Filesize
512KB

Download
memory/1624-57-0x0000000000B40000-0x0000000000B4E000-memory.dmp

Filesize
56KB

Download
memory/1624-56-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/1624-55-0x0000000004B20000-0x0000000004B21000-memory.dmp

Filesize
4KB

Download
memory/1624-54-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/1624-53-0x0000000001050000-0x0000000001104000-memory.dmp

Filesize
720KB

Download
memory/1728-92-0x0000000002450000-0x000000000309A000-memory.dmp

Filesize
12.3MB

Download
memory/1728-93-0x0000000002450000-0x0000000002493000-memory.dmp

Filesize
268KB

Download
memory/1728-94-0x0000000002450000-0x000000000309A000-memory.dmp

Filesize
12.3MB

Download