asyncrat | 7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd

General

Target
7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
Size 45KB
Sample260905-n32f5atfld
SHA256 7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd
MD5 718376972f6add427a028ac10bf1d8cc
SHA1 87ea65ad35f4a3792fcd9fb208c79e5fe9db9559
SHA512 2f840804afbaffbdbf4c6cd54a6c431e1f5abba26e7281651105e8e00d5a011424adcaf61480b3185f0119bd62f0b00b5c0af246e847387c825ee080832381cf
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1fLiE0yFjrdjYkk8PIu7jbmgX3iGRxUw7i26YlRmLB0:cuR0JTPjY2SLBXQBuvb5XSGRBiNYlRw0
TLSH
T1E2232B0037E9812BF2BE4B78A9F22245867AF6736503D64D1CC451DB5613FC68A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

phimsexlon.vip:80
phimsexlon.vip:22
phimsexlon.vip:8080
phimsexlon.vip:8880
phimsexlon.vip:2052
phimsexlon.vip:2082
phimsexlon.vip:2086
phimsexlon.vip:2095
phimsexlon.vip:443
phimsexlon.vip:2053
phimsexlon.vip:2083
phimsexlon.vip:2087
phimsexlon.vip:2096
phimsexlon.vip:8443
www.phimsexlon.vip:80
www.phimsexlon.vip:22
www.phimsexlon.vip:8080
www.phimsexlon.vip:8880
www.phimsexlon.vip:2052
www.phimsexlon.vip:2082
www.phimsexlon.vip:2086
www.phimsexlon.vip:2095
www.phimsexlon.vip:443
www.phimsexlon.vip:2053
www.phimsexlon.vip:2083
www.phimsexlon.vip:2087
www.phimsexlon.vip:2096
www.phimsexlon.vip:8443
malware.phimsexlon.vip:80
malware.phimsexlon.vip:22
malware.phimsexlon.vip:8080
malware.phimsexlon.vip:8880
malware.phimsexlon.vip:2052
malware.phimsexlon.vip:2082
malware.phimsexlon.vip:2086
malware.phimsexlon.vip:2095
malware.phimsexlon.vip:443
malware.phimsexlon.vip:2053
malware.phimsexlon.vip:2083
malware.phimsexlon.vip:2087
malware.phimsexlon.vip:2096
malware.phimsexlon.vip:8443
trickbot.phimsexlon.vip:80
trickbot.phimsexlon.vip:22
trickbot.phimsexlon.vip:8080
trickbot.phimsexlon.vip:8880
trickbot.phimsexlon.vip:2052
trickbot.phimsexlon.vip:2082
trickbot.phimsexlon.vip:2086
trickbot.phimsexlon.vip:2095
trickbot.phimsexlon.vip:443
trickbot.phimsexlon.vip:2053
trickbot.phimsexlon.vip:2083
trickbot.phimsexlon.vip:2087
trickbot.phimsexlon.vip:2096
trickbot.phimsexlon.vip:8443

Mutex

7pIAlZwgbYU3

Attributes

delay
0
install
true
install_file
t2b6.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
behavioral1/files/0x000a00000002436a-8.dat	family_asyncrat

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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe

Executes dropped EXE 2 IoCs

pid	Process
2052	t2b6.exe
2616	t2b6.exe

Outbound SSH connection to public host 2 TTPs 4 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc	pid	Process
SSH destination	18	104.21.94.41:22	2052	t2b6.exe
SSH destination	27	172.67.219.81:22	2052	t2b6.exe
SSH destination	48	104.21.94.41:22	2052	t2b6.exe
SSH destination	56	172.67.219.81:22	2052	t2b6.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3456	cmd.exe
3576	cmd.exe

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	t2b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	t2b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3324	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
2176	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
Token: SeDebugPrivilege	2052	t2b6.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 3456	3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe	85
PID 3288 wrote to memory of 3576	3288	7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe	87
PID 3576 wrote to memory of 3324	3576	cmd.exe	89
PID 3456 wrote to memory of 2176	3456	cmd.exe	90
PID 3576 wrote to memory of 2616	3576	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe
"C:\Users\Admin\AppData\Local\Temp\7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "t2b6" /tr '"C:\Users\Admin\AppData\Roaming\t2b6.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3456
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "t2b6" /tr '"C:\Users\Admin\AppData\Roaming\t2b6.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2176
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9824.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3324
- - C:\Users\Admin\AppData\Roaming\t2b6.exe
    "C:\Users\Admin\AppData\Roaming\t2b6.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2616

C:\Users\Admin\AppData\Roaming\t2b6.exe
"C:\Users\Admin\AppData\Roaming\t2b6.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2052

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Network Service Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

1

T1572

Exfiltration

Impact

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Downloads

tmp9824.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9824.tmp.bat
Size 148B
SHA256 2a2ac037ffc51609d435675d9771a5ff91f2ba8159aa60ccb190fe27de375884
MD5 56024cba78b044f29c4f1a9a6b2468ec
SHA1 6a63601dac5ea95609de00d99a56ebce93c3b659
SHA512 13851714a2f6a452190666501562707a07fecbeccd69fe520587799a10c02d0784ee73ff2c1db6ca16e05f672d6be491a02732729fd909f39680b8fb84e3d06b
TLSH
T1E5C02B7391C5EA4E2805242303FAD48C91B2BC693F40BB40D344440F1280849F4ED351
MD5 SHA1 SHA512 TLSH

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t2b6.exe

Path C:\Users\Admin\AppData\Roaming\t2b6.exe
Size 45KB
SHA256 7ce01432701546871c0d50ca3cd659939ec6cdcd5b2bf4f744805609fec867cd
MD5 718376972f6add427a028ac10bf1d8cc
SHA1 87ea65ad35f4a3792fcd9fb208c79e5fe9db9559
SHA512 2f840804afbaffbdbf4c6cd54a6c431e1f5abba26e7281651105e8e00d5a011424adcaf61480b3185f0119bd62f0b00b5c0af246e847387c825ee080832381cf
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1fLiE0yFjrdjYkk8PIu7jbmgX3iGRxUw7i26YlRmLB0:cuR0JTPjY2SLBXQBuvb5XSGRBiNYlRw0
TLSH
T1E2232B0037E9812BF2BE4B78A9F22245867AF6736503D64D1CC451DB5613FC68A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2052-10-0x00000000051D0000-0x00000000051E0000-memory.dmp

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memory/2052-13-0x00000000051D0000-0x00000000051E0000-memory.dmp

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memory/3288-0-0x0000000000C90000-0x0000000000CA2000-memory.dmp

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memory/3288-1-0x0000000005740000-0x0000000005750000-memory.dmp

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memory/3288-2-0x0000000005640000-0x00000000056DC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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