guloader | 2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a

General

Target

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
Size

370KB
MD5

a32b788edd581c4e82458591793ff4cf
SHA1

f0ec8a70302ef858f7c9dcfdc26fc32404ff287c
SHA256

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a
SHA512

ed951adebedcfc34fdfba478410b2865e0ab489cb8d1ee62ba8f3635faef3d2dafe686ec4a21a0d68c65d6a8833c7a9efa0136672e19a2d77d38371c4a5e0e8e
SSDEEP

6144:Jp+ggHax9YoyAQmlIMGrSdyrjbRnjWoR2HqpAo++:fFY5ALiMqjbJWoZSo++

Score

10^/10

guloader 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:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

Loads dropped DLL 1 IoCs

Processes:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

pid process

840 2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

Drops file in System32 directory 1 IoCs

Processes:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Staldkaadere\Saburra\Rottingen\Skilderhusets.Fat182	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

pid	process
840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
1028	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

description	pid	process	target process
PID 840 set thread context of 1028	840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.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 1 IoCs

Processes:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

pid process

840 2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

description	pid	process	target process
PID 840 wrote to memory of 1028	840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
PID 840 wrote to memory of 1028	840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
PID 840 wrote to memory of 1028	840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
PID 840 wrote to memory of 1028	840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
PID 840 wrote to memory of 1028	840	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe	2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe

C:\Users\Admin\AppData\Local\Temp\2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
"C:\Users\Admin\AppData\Local\Temp\2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:840

C:\Users\Admin\AppData\Local\Temp\2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe
"C:\Users\Admin\AppData\Local\Temp\2485f735c03e20c735eca2c0a09414df90250d4752a18201da5bf6681bf7011a.exe"
2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1028

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\nst947.tmp\System.dll
Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/840-73-0x0000000076F40000-0x00000000770C0000-memory.dmp

Filesize
1.5MB

Download
memory/840-56-0x0000000003840000-0x0000000003A01000-memory.dmp

Filesize
1.8MB

Download
memory/840-57-0x0000000003840000-0x0000000003A01000-memory.dmp

Filesize
1.8MB

Download
memory/840-58-0x0000000003840000-0x0000000003A01000-memory.dmp

Filesize
1.8MB

Download
memory/840-61-0x0000000076D60000-0x0000000076F09000-memory.dmp

Filesize
1.7MB

Download
memory/840-62-0x0000000076F40000-0x00000000770C0000-memory.dmp

Filesize
1.5MB

Download
memory/840-74-0x0000000003840000-0x0000000003A01000-memory.dmp

Filesize
1.8MB

Download
memory/840-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

Filesize
8KB

Download
memory/840-65-0x0000000076F40000-0x00000000770C0000-memory.dmp

Filesize
1.5MB

Download
memory/1028-64-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1028-67-0x0000000076D60000-0x0000000076F09000-memory.dmp

Filesize
1.7MB

Download
memory/1028-70-0x00000000001C0000-0x00000000002C0000-memory.dmp

Filesize
1024KB

Download
memory/1028-71-0x0000000076F40000-0x00000000770C0000-memory.dmp

Filesize
1.5MB

Download
memory/1028-72-0x0000000076F40000-0x00000000770C0000-memory.dmp

Filesize
1.5MB

Download
memory/1028-66-0x00000000001C0000-0x00000000002C0000-memory.dmp

Filesize
1024KB

Download
memory/1028-63-0x00000000004034A5-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads