asyncrat | d71cdeb52c0e74f3b4c96e4b5dbe70af00814283985036d62b43de0950d77b22

General

Target

FedEx_Label_202218201.exe
Size

28KB
MD5

9fa348df801f0d2cebb02378b3546f6e
SHA1

03a5c5344ad4c92366cb086ad78bb7f4fe4f7a17
SHA256

d71cdeb52c0e74f3b4c96e4b5dbe70af00814283985036d62b43de0950d77b22
SHA512

b48e919554920a4f441401b8f453a09eebf10fced670e1e35d01433a2edb990815894250cab3773104ca05064183be3779d4f6acac3040f5955a05a760476ae7
SSDEEP

384:1iAAKDVj/yf2BGuegE3YCoLY40E6vDOT5kYgH5Oj8A5PPPPPPPPPPPPPPPQPPPPV:0AAGo2eg+YCc/6m5k75RPhNf2

Score

10^/10

asyncrat persistence rat

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat 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

Processes:

FedEx_Label_202218201.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	FedEx_Label_202218201.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

FedEx_Label_202218201.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Hzezmdk = "\"C:\\Users\\Admin\\AppData\\Roaming\\Pnitzny\\Hzezmdk.exe\""	FedEx_Label_202218201.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

FedEx_Label_202218201.exe

description pid process target process

PID 1044 set thread context of 1140 1044 FedEx_Label_202218201.exe FedEx_Label_202218201.exe
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 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

1972 powershell.exe
1972 powershell.exe
2104 powershell.exe
2104 powershell.exe

description	pid	process	target process
PID 1044 set thread context of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe

pid	process
1972	powershell.exe
1972	powershell.exe
2104	powershell.exe
2104	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

FedEx_Label_202218201.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1044	FedEx_Label_202218201.exe
Token: SeDebugPrivilege	1972	powershell.exe
Token: SeDebugPrivilege	2104	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

FedEx_Label_202218201.exe

description	pid	process	target process
PID 1044 wrote to memory of 1972	1044	FedEx_Label_202218201.exe	powershell.exe
PID 1044 wrote to memory of 1972	1044	FedEx_Label_202218201.exe	powershell.exe
PID 1044 wrote to memory of 1972	1044	FedEx_Label_202218201.exe	powershell.exe
PID 1044 wrote to memory of 2104	1044	FedEx_Label_202218201.exe	powershell.exe
PID 1044 wrote to memory of 2104	1044	FedEx_Label_202218201.exe	powershell.exe
PID 1044 wrote to memory of 2104	1044	FedEx_Label_202218201.exe	powershell.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe
PID 1044 wrote to memory of 1140	1044	FedEx_Label_202218201.exe	FedEx_Label_202218201.exe

C:\Users\Admin\AppData\Local\Temp\FedEx_Label_202218201.exe
"C:\Users\Admin\AppData\Local\Temp\FedEx_Label_202218201.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1044

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1972

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwADsAIABTAGUAdAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAJwBDADoAXAAnAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2104

C:\Users\Admin\AppData\Local\Temp\FedEx_Label_202218201.exe
C:\Users\Admin\AppData\Local\Temp\FedEx_Label_202218201.exe
2⤵
PID:1140

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\FedEx_Label_202218201.exe.log
Filesize
1KB

MD5
e87e48b105757e1c7563d1c719059733

SHA1
28a3f2b2e0672da2b531f4757d2b20b53032dafc

SHA256
0aaf22dc84cc3fcfe53de7ccfed8e662247dfb7f1a9967032c88790d0c663461

SHA512
bf19c5743143aee914a453c41189c722c9b90a5b8bf299cecf3e1f97656d32cd209ecb74da8aebc89bb41c27d189f73aaaabbc64fe383410c95dc76ad4218968

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
1KB

MD5
4280e36a29fa31c01e4d8b2ba726a0d8

SHA1
c485c2c9ce0a99747b18d899b71dfa9a64dabe32

SHA256
e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359

SHA512
494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Filesize
53KB

MD5
06ad34f9739c5159b4d92d702545bd49

SHA1
9152a0d4f153f3f40f7e606be75f81b582ee0c17

SHA256
474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba

SHA512
c272cd28ae164d465b779163ba9eca6a28261376414c6bbdfbd9f2128adb7f7ff1420e536b4d6000d0301ded2ec9036bc5c657588458bff41f176bdce8d74f92

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
16KB

MD5
cbfd0ba858b8073518c9a395c243d999

SHA1
a1ceac7122b573ef7e2ba832b5293f70c6c502c0

SHA256
3a33ceb229d292079615db26fd9b04487c93c9fc14474be9c0172938a88c6f10

SHA512
2201b64be0b89f30f4cdd7d3f85efbbb0f5d835dfbf0ea569cc64c7fb906d868eb3bb7b142ab4347325d75f6b101c9c48778019298e6b6bfaad48bf3593309d7

Download Submit
memory/1044-133-0x0000000006120000-0x0000000006142000-memory.dmp

Filesize
136KB

Download
memory/1044-132-0x0000000000B90000-0x0000000000B9C000-memory.dmp

Filesize
48KB

Download
memory/1140-155-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1140-154-0x0000000000000000-mapping.dmp

Download
memory/1972-138-0x0000000006040000-0x00000000060A6000-memory.dmp

Filesize
408KB

Download
memory/1972-141-0x0000000006B00000-0x0000000006B1A000-memory.dmp

Filesize
104KB

Download
memory/1972-134-0x0000000000000000-mapping.dmp

Download
memory/1972-140-0x0000000007C80000-0x00000000082FA000-memory.dmp

Filesize
6.5MB

Download
memory/1972-139-0x0000000006650000-0x000000000666E000-memory.dmp

Filesize
120KB

Download
memory/1972-137-0x0000000005ED0000-0x0000000005F36000-memory.dmp

Filesize
408KB

Download
memory/1972-135-0x0000000005080000-0x00000000050B6000-memory.dmp

Filesize
216KB

Download
memory/1972-136-0x0000000005830000-0x0000000005E58000-memory.dmp

Filesize
6.2MB

Download
memory/2104-149-0x0000000007000000-0x000000000700A000-memory.dmp

Filesize
40KB

Download
memory/2104-148-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/2104-150-0x00000000073C0000-0x0000000007456000-memory.dmp

Filesize
600KB

Download
memory/2104-151-0x00000000072C0000-0x00000000072CE000-memory.dmp

Filesize
56KB

Download
memory/2104-152-0x0000000007320000-0x000000000733A000-memory.dmp

Filesize
104KB

Download
memory/2104-153-0x0000000007300000-0x0000000007308000-memory.dmp

Filesize
32KB

Download
memory/2104-147-0x000000006FE90000-0x000000006FEDC000-memory.dmp

Filesize
304KB

Download
memory/2104-146-0x0000000007010000-0x0000000007042000-memory.dmp

Filesize
200KB

Download
memory/2104-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads