asyncrat | d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623

General

Target
d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
Size 45KB
Sample260601-ntzaeact4n
SHA256 d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623
MD5 e01d2df9b9941ed7794c98532c0011e7
SHA1 c97b7ef8e882e51d0a570b08166c8ce9ffe848ae
SHA512 24c13f458a78d3e697dab3461eef39a94a0279b54c77fe679c8f34e87967e1febcbd508d5b9785ade6ee8973e59725bf85515cd496f63f44ff930214d26b4f28
SSDEEP 768:JuxJNT5UR5rWUX8N5mo2qAw0b3NEAteiZPISzjbagX3ifYwsDn66N5j8FjwTBDZV:JuxJNT5OU2z3ehiWS3bNXSEDn66+w1dV
TLSH
T1E4232C0037E9812BF2BE4F7869F26245867EF2632603D5491CC451DB5723FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

haysex.vip:443
haysex.vip:80
haysex.vip:7797
haysex.vip:8707
haysex.vip:6620
www.haysex.vip:443
www.haysex.vip:80
www.haysex.vip:7797
www.haysex.vip:8707
www.haysex.vip:6620
iloveyou.haysex.vip:443
iloveyou.haysex.vip:80
iloveyou.haysex.vip:7797
iloveyou.haysex.vip:8707
iloveyou.haysex.vip:6620
zeus.haysex.vip:443
zeus.haysex.vip:80
zeus.haysex.vip:7797
zeus.haysex.vip:8707
zeus.haysex.vip:6620
industroyer.haysex.vip:443
industroyer.haysex.vip:80
industroyer.haysex.vip:7797
industroyer.haysex.vip:8707
industroyer.haysex.vip:6620

Mutex

6ZwbAJIKCamo

Attributes

delay
0
install
true
install_file
kyck.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x001e00000002b379-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4828	kyck.exe
740	kyck.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kyck.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kyck.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2808	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3568	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
Token: SeDebugPrivilege	4828	kyck.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 4040	1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe	81
PID 1448 wrote to memory of 2312	1448	d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe	82
PID 4040 wrote to memory of 3568	4040	cmd.exe	85
PID 2312 wrote to memory of 2808	2312	cmd.exe	86
PID 2312 wrote to memory of 740	2312	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe
"C:\Users\Admin\AppData\Local\Temp\d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "kyck" /tr '"C:\Users\Admin\AppData\Roaming\kyck.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4040
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "kyck" /tr '"C:\Users\Admin\AppData\Roaming\kyck.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3568
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1C2E.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2808
- - C:\Users\Admin\AppData\Roaming\kyck.exe
    "C:\Users\Admin\AppData\Roaming\kyck.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:740

C:\Users\Admin\AppData\Roaming\kyck.exe
"C:\Users\Admin\AppData\Roaming\kyck.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4828

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp1C2E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1C2E.tmp.bat
Size 148B
SHA256 6af53f2f1d36253e4f2f9f123315a545d201c180b1f6008eadf1e5cfc13fdae4
MD5 38c30b56d0005849f5f461747f6c2cfb
SHA1 52a3d293ac57516f30f407b599a969d7d93ec3f7
SHA512 d76aab73d78e8f2d8156545d8dbdf80e386bb02fe4d849bfacfde5181e6c452872f2b1163e3759338bff33b410685452bdf514fdf7cf7def7be3d583b8c6f533
TLSH
T1DAC02B8255CDEA4F690D142307FAD8CCA1726C193F40BB00C304400E2680448F0D9341
MD5 SHA1 SHA512 TLSH

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kyck.exe

Path C:\Users\Admin\AppData\Roaming\kyck.exe
Size 45KB
SHA256 d5a44a2da8ef0510bb6ba96b30c546fac5b6ac083192bc2a078090d802544623
MD5 e01d2df9b9941ed7794c98532c0011e7
SHA1 c97b7ef8e882e51d0a570b08166c8ce9ffe848ae
SHA512 24c13f458a78d3e697dab3461eef39a94a0279b54c77fe679c8f34e87967e1febcbd508d5b9785ade6ee8973e59725bf85515cd496f63f44ff930214d26b4f28
SSDEEP 768:JuxJNT5UR5rWUX8N5mo2qAw0b3NEAteiZPISzjbagX3ifYwsDn66N5j8FjwTBDZV:JuxJNT5OU2z3ehiWS3bNXSEDn66+w1dV
TLSH
T1E4232C0037E9812BF2BE4F7869F26245867EF2632603D5491CC451DB5723FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1448-0-0x0000000000EC0000-0x0000000000ED2000-memory.dmp

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memory/1448-1-0x00000000057E0000-0x00000000057F0000-memory.dmp

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memory/1448-2-0x0000000005890000-0x000000000592C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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