0f6b398bf5f91af3ec82ad6a7417ec3dd71f7f220409d5c327b63a4c7334e844

General

Target

tmp.exe
Size

1.5MB
MD5

09f16ecc21bd2d570fd6c6411128b714
SHA1

71dd57498b1989e7c61e1c4865f306e5d5e222f2
SHA256

0f6b398bf5f91af3ec82ad6a7417ec3dd71f7f220409d5c327b63a4c7334e844
SHA512

2b89d3c3e6722da0c7acfb8468aebfe112fadda93f71708e48035b9bb0ea35120a0eb1d04c80c4d2c4a2004f866f71d8a072f1f8ebc567d2813b243ac21488e1
SSDEEP

49152:KBrY2fc7XyDjhZ0j5Jl34KZbGiJyXoogg:ArncjyDNajHZbGi4

Score

7^/10

persistence

Malware Config

Signatures

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	tmp.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	UClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UClient = "C:\\Users\\Admin\\Desktop\\UClient.exe /s"	UClient.exe

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

System Information Discovery
T1082

Modifies registry class 17 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\ = "URL:uclient protocol handler"	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\DefaultIcon	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\shell\open	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.esc	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\URL Protocol	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\DefaultIcon\ = "C:\\Users\\Admin\\Desktop\\UClient.exe"	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\shell\open\command\ = "C:\\Users\\Admin\\Desktop\\UClient.exe \"%1\""	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.esc\DefaultIcon\ = "C:\\Users\\Admin\\Desktop\\UClient.exe"	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.escr\DefaultIcon	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\shell	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.esc\DefaultIcon	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\uclient\shell\open\command	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.esc\ = "uclient"	UClient.exe
Key created	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.escr	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.escr\ = "uclient"	UClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.escr\DefaultIcon\ = "C:\\Users\\Admin\\Desktop\\UClient.exe"	UClient.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3588	tmp.exe
3588	tmp.exe
4072	UClient.exe
4072	UClient.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4072	UClient.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4072	UClient.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 4072	3588	tmp.exe	93
PID 3588 wrote to memory of 4072	3588	tmp.exe	93
PID 3588 wrote to memory of 4072	3588	tmp.exe	93

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\Desktop\UClient.exe
  "C:\Users\Admin\Desktop\UClient.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4072

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=2232 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:1780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\uclient\log\main.log

Filesize
241B

MD5
1ef94d5bf525494b8e27e5f960c806c4

SHA1
fe729809a4796673e448235cfd8ea2eb2b9f14be

SHA256
a34bfb03c1f296522d7e8288de7dda6dfcbafc9a3739b1567949b31e22899685

SHA512
8226488613e9cd15de765b1c14bc706062de3a4c28d151232fb585f174986c9eea9c28ccc213bb78f29506603853fad7e17ea21316e80f5047bbe437eb843c02

Download Submit
C:\Users\Admin\Desktop\UClient.exe

Filesize
1.5MB

MD5
09f16ecc21bd2d570fd6c6411128b714

SHA1
71dd57498b1989e7c61e1c4865f306e5d5e222f2

SHA256
0f6b398bf5f91af3ec82ad6a7417ec3dd71f7f220409d5c327b63a4c7334e844

SHA512
2b89d3c3e6722da0c7acfb8468aebfe112fadda93f71708e48035b9bb0ea35120a0eb1d04c80c4d2c4a2004f866f71d8a072f1f8ebc567d2813b243ac21488e1

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads