nymaim | 8ec9fcf2fbb49f5ebaf8ea7be00059305ed3cd85fb21d773bcfe723e605c14b5

Analysis

max time kernel
91s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 12:13

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General

Target
file.exe
Size 395KB
Sample221007-pdq5jacdc9
SHA256 8ec9fcf2fbb49f5ebaf8ea7be00059305ed3cd85fb21d773bcfe723e605c14b5
MD5 d1f72eac0b7012d8724634045c31dc70
SHA1 263af9383171620fabbccd6bf6c20b6f9d652b78
SHA512 327b4e61adc24d3f85f8dac474bbe4abf554c898384b3cad8175265e90a387bd86970626806f34e45de546a6a4ee247a274536ee8ed8371d4f22eb2310989223
SSDEEP 6144:HjcLEDO4diGOJjHhVWvy7XBPIuY1vsNDh0puzbgwukVbwVfs:Dcg64FG3Wq7XBIvsNDMunnL
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 1 IoCs

pid	Process
1300	tRpWkj96z.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
2128	1244	WerFault.exe	80
1696	1244	WerFault.exe	80
800	1244	WerFault.exe	80
724	1244	WerFault.exe	80
616	1244	WerFault.exe	80
316	1244	WerFault.exe	80
4420	1244	WerFault.exe	80
2320	1244	WerFault.exe	80
5044	1244	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
1880	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1244	file.exe
1244	file.exe
1244	file.exe
1244	file.exe
1244	file.exe
1244	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 1300	1244	file.exe	101
PID 1244 wrote to memory of 1300	1244	file.exe	101
PID 1244 wrote to memory of 1300	1244	file.exe	101
PID 1244 wrote to memory of 1320	1244	file.exe	108
PID 1244 wrote to memory of 1320	1244	file.exe	108
PID 1244 wrote to memory of 1320	1244	file.exe	108
PID 1320 wrote to memory of 1880	1320	cmd.exe	110
PID 1320 wrote to memory of 1880	1320	cmd.exe	110
PID 1320 wrote to memory of 1880	1320	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 452
  2⤵
  - Program crash
  PID:2128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 764
  2⤵
  - Program crash
  PID:1696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 772
  2⤵
  - Program crash
  PID:800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 772
  2⤵
  - Program crash
  PID:724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 804
  2⤵
  - Program crash
  PID:616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 928
  2⤵
  - Program crash
  PID:316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 1000
  2⤵
  - Program crash
  PID:4420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 1104
  2⤵
  - Program crash
  PID:2320
- C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\tRpWkj96z.exe
  2⤵
  - Executes dropped EXE
  PID:1300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 1456
  2⤵
  - Program crash
  PID:5044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1320
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1244 -ip 1244
1⤵
PID:2084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1244 -ip 1244
1⤵
PID:1092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1244 -ip 1244
1⤵
PID:892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1244 -ip 1244
1⤵
PID:4888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1244 -ip 1244
1⤵
PID:936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1244 -ip 1244
1⤵
PID:4164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1244 -ip 1244
1⤵
PID:792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1244 -ip 1244
1⤵
PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 124 -p 1244 -ip 1244
1⤵
PID:3728

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

tRpWkj96z.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\tRpWkj96z.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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tRpWkj96z.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\tRpWkj96z.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/1244-145-0x00000000007CD000-0x00000000007FE000-memory.dmp

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memory/1244-133-0x0000000000710000-0x0000000000763000-memory.dmp

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memory/1244-134-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1244-132-0x00000000007CD000-0x00000000007FE000-memory.dmp

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memory/1244-138-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1244-142-0x00000000007CD000-0x00000000007FE000-memory.dmp

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memory/1244-143-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1244-146-0x0000000000400000-0x0000000000468000-memory.dmp

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