guloader | 114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e

General

Target

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
Size

1.2MB
MD5

af1396ae6de9b21c65208759f351072c
SHA1

d5d206e5de775ccd65a7fd676491c1723d6439cd
SHA256

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e
SHA512

639f343b4fdd43d762d7b037a9307dbba3675fd060610e4181cfd192cf06aa92b77116f73bdf5e205804a3ebe75bf99030541090eb583adc206e7eac5a5fcac5
SSDEEP

24576:/utJ4VSJli1SxaG8iP1xlrHJq/O8ixgkjtUqg+LXg17nPQZ7lRNGhs+dZqI/VSkU:5gb2SxwaRrHJiO8ixgkrnLk7CBCZqSVo

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.execaspol.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 1 IoCs

Processes:

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe

pid process

1160 114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.execaspol.exe

pid process

1160 114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
1176 caspol.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe

description	pid	process	target process
PID 1160 set thread context of 1176	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe

pid	process
1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe

description	pid	process	target process
PID 1160 wrote to memory of 1440	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1440	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1440	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1440	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1176	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1176	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1176	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1176	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe
PID 1160 wrote to memory of 1176	1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe	caspol.exe

C:\Users\Admin\AppData\Local\Temp\114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
"C:\Users\Admin\AppData\Local\Temp\114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe"
  2⤵
  PID:1440
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:1176

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsdF4F.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/1160-65-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1160-67-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1160-57-0x0000000003860000-0x0000000003961000-memory.dmp

Filesize
1.0MB

Download
memory/1160-60-0x0000000077900000-0x0000000077AA9000-memory.dmp

Filesize
1.7MB

Download
memory/1160-74-0x0000000003860000-0x0000000003961000-memory.dmp

Filesize
1.0MB

Download
memory/1160-75-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1160-56-0x0000000003860000-0x0000000003961000-memory.dmp

Filesize
1.0MB

Download
memory/1160-63-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1160-62-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1160-71-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1160-54-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/1176-68-0x0000000077900000-0x0000000077AA9000-memory.dmp

Filesize
1.7MB

Download
memory/1176-72-0x0000000000200000-0x0000000000300000-memory.dmp

Filesize
1024KB

Download
memory/1176-73-0x0000000077AE0000-0x0000000077C60000-memory.dmp

Filesize
1.5MB

Download
memory/1176-64-0x0000000001018A9E-mapping.dmp

Download
memory/1176-66-0x0000000000200000-0x0000000000300000-memory.dmp

Filesize
1024KB

Download

pid	process
1160	114a7efb95ce3d5b35a36781755d02ad1ef8de4620369416ac62580789d1d85e.exe
1176	caspol.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads