932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14

Analysis

max time kernel
43s
max time network
114s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-11-2022 14:49

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General

Target

932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe
Size

302KB
MD5

87817dff8804ac16744cc5bfc8e922b1
SHA1

fbee28c86835f0a8f702e5e84a480cc254df99d7
SHA256

932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14
SHA512

fd58eb7e218ba118040525640a211ac6f5e6e290e4309326f26e81b6aa90b52c2eb393f23f36aaf3c89cd70edca766f93b0dddf0574e7ffa8c219eb4b1d9ba49
SSDEEP

6144:GBlL/b/idtSHFKChxfgruxEMUwnjiIE6UFQBy2/m4S9eMw+m/h+1uUfuX:EVajgffInMjnjTUFQB4TTmJ+m

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe
1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\thhymtwcfdgu = "C:\\Users\\Admin\\AppData\\Roaming\\jbffpjtf\\iakmuqp.exe"	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	freegeoip.app
3	checkip.dyndns.org
5	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1812 set thread context of 976	1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe	28

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
976	MSBuild.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	976	MSBuild.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 976	1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe	28
PID 1812 wrote to memory of 976	1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe	28
PID 1812 wrote to memory of 976	1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe	28
PID 1812 wrote to memory of 976	1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe	28
PID 1812 wrote to memory of 976	1812	932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe	28
PID 976 wrote to memory of 1424	976	MSBuild.exe	29
PID 976 wrote to memory of 1424	976	MSBuild.exe	29
PID 976 wrote to memory of 1424	976	MSBuild.exe	29
PID 976 wrote to memory of 1424	976	MSBuild.exe	29

C:\Users\Admin\AppData\Local\Temp\932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe
"C:\Users\Admin\AppData\Local\Temp\932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
  "C:\Users\Admin\AppData\Local\Temp\932694b1d0a75e54084e271e67c1bf8fd87aa889bf5d8137bb16cfa6f87b4f14.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:976
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 1496
    3⤵
    PID:1424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsyEF7F.tmp\System.dll

Filesize
10KB

MD5
56a321bd011112ec5d8a32b2f6fd3231

SHA1
df20e3a35a1636de64df5290ae5e4e7572447f78

SHA256
bb6df93369b498eaa638b0bcdc4bb89f45e9b02ca12d28bcedf4629ea7f5e0f1

SHA512
5354890cbc53ce51081a78c64ba9c4c8c4dc9e01141798c1e916e19c5776dac7c82989fad0f08c73e81aaba332dad81205f90d0663119af45550b97b338b9cc3

Download Submit
\Users\Admin\AppData\Local\Temp\nsyEF7F.tmp\System.dll

Filesize
10KB

MD5
56a321bd011112ec5d8a32b2f6fd3231

SHA1
df20e3a35a1636de64df5290ae5e4e7572447f78

SHA256
bb6df93369b498eaa638b0bcdc4bb89f45e9b02ca12d28bcedf4629ea7f5e0f1

SHA512
5354890cbc53ce51081a78c64ba9c4c8c4dc9e01141798c1e916e19c5776dac7c82989fad0f08c73e81aaba332dad81205f90d0663119af45550b97b338b9cc3

Download Submit
memory/976-57-0x000000000044284E-mapping.dmp

Download
memory/976-59-0x00000000744F0000-0x0000000074A9B000-memory.dmp

Filesize
5.7MB

Download
memory/976-62-0x00000000744F0000-0x0000000074A9B000-memory.dmp

Filesize
5.7MB

Download
memory/1424-60-0x0000000000000000-mapping.dmp

Download
memory/1812-54-0x0000000076411000-0x0000000076413000-memory.dmp

Filesize
8KB

Download