nymaim | 614fc876a9dff9ec9c157384c791ffda532024dd00f807288cd20091b9a89753

Analysis

max time kernel
133s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08/10/2022, 17:27

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General

Target
file.exe
Size 399KB
Sample221008-v1emxafba2
SHA256 614fc876a9dff9ec9c157384c791ffda532024dd00f807288cd20091b9a89753
MD5 d7b2a7a27be76705bfe35f9eb37160b4
SHA1 3d9ee73ba32f44d1ea29376e1623a13c36bae880
SHA512 6bdf6f26c7f8af1f24375d293becf369330d239c56cbec55d1aeb9edd7a32cad03491c672c75a05379c97d7b5c779ad002ce21e3843daa68de1244fa78557786
SSDEEP 6144:jVGB+GCIGsiLiYyzjVBomjniR8iAvM3UjnMdXaZsrwVfXS:j8mXsiLeBom2Kg3JNZ
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
3716	npCbI.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 10 IoCs

pid	pid_target	Process	procid_target
5088	1264	WerFault.exe	81
3368	1264	WerFault.exe	81
4832	1264	WerFault.exe	81
836	1264	WerFault.exe	81
1104	1264	WerFault.exe	81
1840	1264	WerFault.exe	81
2040	1264	WerFault.exe	81
3640	1264	WerFault.exe	81
928	1264	WerFault.exe	81
728	1264	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
4452	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1264	file.exe
1264	file.exe
1264	file.exe
1264	file.exe
1264	file.exe
1264	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4452	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 3716	1264	file.exe	103
PID 1264 wrote to memory of 3716	1264	file.exe	103
PID 1264 wrote to memory of 3716	1264	file.exe	103
PID 1264 wrote to memory of 696	1264	file.exe	109
PID 1264 wrote to memory of 696	1264	file.exe	109
PID 1264 wrote to memory of 696	1264	file.exe	109
PID 696 wrote to memory of 4452	696	cmd.exe	113
PID 696 wrote to memory of 4452	696	cmd.exe	113
PID 696 wrote to memory of 4452	696	cmd.exe	113

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:1264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 456
  2⤵
  - Program crash
  PID:5088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 772
  2⤵
  - Program crash
  PID:3368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 780
  2⤵
  - Program crash
  PID:4832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 780
  2⤵
  - Program crash
  PID:836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 804
  2⤵
  - Program crash
  PID:1104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 928
  2⤵
  - Program crash
  PID:1840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 1008
  2⤵
  - Program crash
  PID:2040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 928
  2⤵
  - Program crash
  PID:3640
- C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\npCbI.exe
  2⤵
  - Executes dropped EXE
  PID:3716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 1456
  2⤵
  - Program crash
  PID:928
- 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:696
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 492
  2⤵
  - Program crash
  PID:728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1264 -ip 1264
1⤵
PID:5076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1264 -ip 1264
1⤵
PID:1480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1264 -ip 1264
1⤵
PID:1216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1264 -ip 1264
1⤵
PID:4032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1264 -ip 1264
1⤵
PID:1144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1264 -ip 1264
1⤵
PID:3472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1264 -ip 1264
1⤵
PID:3768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1264 -ip 1264
1⤵
PID:364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1264 -ip 1264
1⤵
PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 600 -p 1264 -ip 1264
1⤵
PID:1008

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

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Downloads

npCbI.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\npCbI.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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npCbI.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\npCbI.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/1264-138-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1264-134-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1264-132-0x000000000074D000-0x000000000077E000-memory.dmp

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memory/1264-142-0x000000000074D000-0x000000000077E000-memory.dmp

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memory/1264-143-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1264-133-0x00000000020D0000-0x0000000002123000-memory.dmp

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memory/1264-146-0x000000000074D000-0x000000000077E000-memory.dmp

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memory/1264-147-0x0000000000400000-0x0000000000468000-memory.dmp

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