zebrocy | 471ed649fe4f91930ff3b2dcbd14c47904975844a22269635deda338e2bc8498

Analysis

max time kernel
94s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2025, 06:22

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General

Target

2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe
Size

3.8MB
MD5

04ba1382d3b32b13b5be3e1dc1bf9a0c
SHA1

e10fbf5f3b3c4f8a948471346e3db15fd8743490
SHA256

471ed649fe4f91930ff3b2dcbd14c47904975844a22269635deda338e2bc8498
SHA512

f7152d5684655decd1896d97014641522153e0e648abb279029a48b9a7f50e27be3b9eff31ac8889735302e561a25a9cde9a8dd4eed580453068260e1c7b7143
SSDEEP

49152:TcV8Ytr1dhrwierOjeAzBruTqQt02+Pg1:TWrHh28gqQ+Q

Score

10^/10

zebrocy backdoor discovery trojan upx

Malware Config

Signatures

Zebrocy
Zebrocy is a backdoor created by Sofacy threat group and has multiple variants developed in different languages.
trojan backdoor zebrocy

Zebrocy Go Variant 2 IoCs

resource	yara_rule
behavioral2/memory/1224-0-0x0000000000400000-0x00000000007EB000-memory.dmp	Zebrocy
behavioral2/memory/1224-7-0x0000000000400000-0x00000000007EB000-memory.dmp	Zebrocy

Zebrocy family
zebrocy

Executes dropped EXE 1 IoCs

pid	Process
2516	2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatchmgr.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023c55-4.dat	upx
behavioral2/memory/2516-5-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/2516-9-0x0000000000400000-0x000000000045D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1064	2516	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatchmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 2516	1224	2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe	85
PID 1224 wrote to memory of 2516	1224	2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe	85
PID 1224 wrote to memory of 2516	1224	2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe	85

C:\Users\Admin\AppData\Local\Temp\2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatch.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatchmgr.exe
  C:\Users\Admin\AppData\Local\Temp\2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatchmgr.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 264
    3⤵
    - Program crash
    PID:1064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2516 -ip 2516
1⤵
PID:2424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2025-02-27_04ba1382d3b32b13b5be3e1dc1bf9a0c_ramnit_sliver_snake_snatchmgr.exe

Filesize
105KB

MD5
d5ca6e1f080abc64bbb11e098acbeabb

SHA1
1849634bf5a65e1baddddd4452c99dfa003e2647

SHA256
30193b5ccf8a1834eac3502ef165350ab74b107451145f3d2937fdf24b9eceae

SHA512
aa57ce51de38af6212d7339c4baac543a54b0f527621b0ef9e78eca5e5699e8508a154f54f8ac04135527d8417275eeee72a502a362547575699330cc756b161

Download Submit
memory/1224-0-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/1224-7-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2516-5-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2516-6-0x0000000000520000-0x0000000000521000-memory.dmp

Filesize
4KB

Download
memory/2516-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download