fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21

General

Target
fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe
Size 134KB
Sample240607-lrc82sed8w
SHA256 fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21
MD5 57e74848df037968d9aee313a2d2ff9b
SHA1 aed80f9e99414c293981e87f881223e7cbb9b8fb
SHA512 c5f15b30a5287b3cee8355e696f4c6a57a6958cb791e4f70c4edb6cee473980a026ddf02ff6616020631b3b9d183da9c0fea2b17380a5219768916fa06d35c8b
SSDEEP 1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOxL:YfU/WF6QMauSuiWNi9eNOl0007NZIOxL
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/memory/4188-0-0x0000000000650000-0x0000000000678000-memory.dmp	UPX
behavioral2/files/0x000800000002325b-3.dat	UPX
behavioral2/memory/5080-4-0x0000000000130000-0x0000000000158000-memory.dmp	UPX
behavioral2/memory/4188-6-0x0000000000650000-0x0000000000678000-memory.dmp	UPX
behavioral2/memory/5080-7-0x0000000000130000-0x0000000000158000-memory.dmp	UPX
behavioral2/memory/4188-8-0x0000000000650000-0x0000000000678000-memory.dmp	UPX

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	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe

Executes dropped EXE 1 IoCs

pid	Process
5080	wuauclt.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4188-0-0x0000000000650000-0x0000000000678000-memory.dmp	upx
behavioral2/files/0x000800000002325b-3.dat	upx
behavioral2/memory/5080-4-0x0000000000130000-0x0000000000158000-memory.dmp	upx
behavioral2/memory/4188-6-0x0000000000650000-0x0000000000678000-memory.dmp	upx
behavioral2/memory/5080-7-0x0000000000130000-0x0000000000158000-memory.dmp	upx
behavioral2/memory/4188-8-0x0000000000650000-0x0000000000678000-memory.dmp	upx

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 5080	4188	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe	91
PID 4188 wrote to memory of 5080	4188	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe	91
PID 4188 wrote to memory of 5080	4188	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe	91
PID 4188 wrote to memory of 2252	4188	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe	100
PID 4188 wrote to memory of 2252	4188	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe	100
PID 4188 wrote to memory of 2252	4188	fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe	100

C:\Users\Admin\AppData\Local\Temp\fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe
"C:\Users\Admin\AppData\Local\Temp\fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4188
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  PID:5080
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\fda7edc6ba715ee33ab20e75f1c421d78a0106018ce0548f89c3dab71e0d3a21.exe" >> NUL
  2⤵
  PID:2252

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=3636 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
1⤵
PID:3952

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

wuauclt.exe

Path C:\ProgramData\Update\wuauclt.exe
Size 134KB
SHA256 3678780edb0c27fe6f68cb280fafbe522a6a03db85a162331df1f14d1fb0565c
MD5 4a57591e9ead8bd3acc989d60457778c
SHA1 1922d171a414bc2f21435ea1df8f2524411d9484
SHA512 fbd915510f6f94f595ebe882648a939907af00ec35f9d0478de568344b83c244049a8a9bfe97e08d38026d85effadda2c79b0f2bc60b854bc3b138034ba19583
SSDEEP 1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOxe:YfU/WF6QMauSuiWNi9eNOl0007NZIOxe
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4188-0-0x0000000000650000-0x0000000000678000-memory.dmp

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memory/4188-6-0x0000000000650000-0x0000000000678000-memory.dmp

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memory/4188-8-0x0000000000650000-0x0000000000678000-memory.dmp

Download

memory/5080-4-0x0000000000130000-0x0000000000158000-memory.dmp

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memory/5080-7-0x0000000000130000-0x0000000000158000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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