nymaim | 2ea56ea49ac4e2b743cfc85e2b6ae67220737c20908e0f5d7268e71b593c0515

Analysis

max time kernel
52s
max time network
54s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/10/2022, 17:30

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General

Target
file.exe
Size 396KB
Sample221007-v26ssadaa2
SHA256 2ea56ea49ac4e2b743cfc85e2b6ae67220737c20908e0f5d7268e71b593c0515
MD5 68ec703c7da5f26239c20e79fcfbccbb
SHA1 85ca683b50e1bd0d40d0ef0de6ddfcbc6fe17a04
SHA512 c562235c2fb5bf13dab85853ad05516f65e56be9f03f00c0746db701fc1676bc66823b30130043fee91b66837e5fbd594d901bbe4dc306a4030c49a2cfdd814b
SSDEEP 6144:JRkpFrbleKihl2WbJRQPOT7vcokBEzGTagT8CZiZuzbgwua0UwVfs:Jqphp4bJRiOT7vcNBEzE7x+unn3
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
1496	gEvR2eFQD.exe

Deletes itself 1 IoCs

pid	Process
272	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1956	file.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
276	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1956	file.exe
1956	file.exe
1956	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	276	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 1496	1956	file.exe	29
PID 1956 wrote to memory of 1496	1956	file.exe	29
PID 1956 wrote to memory of 1496	1956	file.exe	29
PID 1956 wrote to memory of 1496	1956	file.exe	29
PID 1956 wrote to memory of 272	1956	file.exe	30
PID 1956 wrote to memory of 272	1956	file.exe	30
PID 1956 wrote to memory of 272	1956	file.exe	30
PID 1956 wrote to memory of 272	1956	file.exe	30
PID 272 wrote to memory of 276	272	cmd.exe	32
PID 272 wrote to memory of 276	272	cmd.exe	32
PID 272 wrote to memory of 276	272	cmd.exe	32
PID 272 wrote to memory of 276	272	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\gEvR2eFQD.exe
  2⤵
  - Executes dropped EXE
  PID:1496
- 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⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:272
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

gEvR2eFQD.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\gEvR2eFQD.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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gEvR2eFQD.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\gEvR2eFQD.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/1956-57-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1956-54-0x0000000075141000-0x0000000075143000-memory.dmp

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memory/1956-61-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1956-65-0x000000000063B000-0x000000000066C000-memory.dmp

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memory/1956-66-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1956-55-0x000000000063B000-0x000000000066C000-memory.dmp

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memory/1956-68-0x000000000063B000-0x000000000066C000-memory.dmp

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memory/1956-69-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1956-56-0x0000000000220000-0x0000000000273000-memory.dmp

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