e931dd3e90929590cda8e72e0bb076ac67141e6fd74c60e7e890d496c39f792c

Analysis

max time kernel
146s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
13/07/2023, 06:35

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General

Target

Invoice.exe
Size

288KB
MD5

d523e46bde57fe8757be9a9d0621a848
SHA1

8ab09f55a4171d31de3e0f26cbea3f24b278db4a
SHA256

38c1c1705e3b01c99f4767d19065cbd50ccae650ef3f4ee03c8327a1a33db868
SHA512

d853cba946433d854474dfe672fb3b4196a84d7fded368bb2c4f2d3fc52de6fc86a90c80bc184c987bb4e2f730244eaef42f64d02400fe34b020b15c3093db3d
SSDEEP

6144:/Ya6vhkS/3xIK2bNE1+pPss8vNm9LDLaAn8LM9uAsLy:/YFhN6K2m1+px8Y9LDL/Cxy

Score

7^/10

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-1-5-21-1722984668-1829624581-3022101259-1000\Control Panel\International\Geo\Nation	Invoice.exe

Loads dropped DLL 1 IoCs

pid	Process
484	Invoice.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{7EB78B5A-8A0B-4D4A-B6B9-FEEBEE113E65}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 484 set thread context of 3944	484	Invoice.exe	81

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe
3944	Invoice.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
484	Invoice.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3944	Invoice.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 484 wrote to memory of 3944	484	Invoice.exe	81
PID 484 wrote to memory of 3944	484	Invoice.exe	81
PID 484 wrote to memory of 3944	484	Invoice.exe	81
PID 484 wrote to memory of 3944	484	Invoice.exe	81

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:484
- C:\Users\Admin\AppData\Local\Temp\Invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3944

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsr64B7.tmp\sylffyes.dll

Filesize
83KB

MD5
995cb572c3a25844a871964f417d405b

SHA1
d410bae4485f09e4d21d49634e60aac187eafca1

SHA256
202aa236c0bfea4e960484c894507b3245769e7dcb6e31860bc1e86c1af20270

SHA512
4bf3ba19555cde75d68893104f88b875b2a4fafe75074931c99630fa9d05bb70a96b3635b57f671a9dc28de6e84bd93d902997fc45bbfb9cb0e252de7495a629

Download Submit
C:\Users\Admin\AppData\Local\Temp\wsuA6CF.tmp

Filesize
14KB

MD5
c01eaa0bdcd7c30a42bbb35a9acbf574

SHA1
0aee3e1b873e41d040f1991819d0027b6cc68f54

SHA256
32297224427103aa1834dba276bf5d49cd5dd6bda0291422e47ad0d0706c6d40

SHA512
d26ff775ad39425933cd3df92209faa53ec5b701e65bfbcccc64ce8dd3e79f619a9bad7cc975a98a95f2006ae89e50551877fc315a3050e48d5ab89e0802e2b7

Download Submit
memory/484-139-0x0000000075150000-0x0000000075168000-memory.dmp

Filesize
96KB

Download
memory/484-142-0x0000000075150000-0x0000000075168000-memory.dmp

Filesize
96KB

Download
memory/3944-140-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3944-141-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3944-143-0x00000000009B0000-0x0000000000CFA000-memory.dmp

Filesize
3.3MB

Download
memory/3944-145-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download